CN114010532A - Double-agent unidirectional slow-release skin repairing film and preparation method and application thereof - Google Patents

Double-agent unidirectional slow-release skin repairing film and preparation method and application thereof Download PDF

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CN114010532A
CN114010532A CN202111226044.2A CN202111226044A CN114010532A CN 114010532 A CN114010532 A CN 114010532A CN 202111226044 A CN202111226044 A CN 202111226044A CN 114010532 A CN114010532 A CN 114010532A
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skin
agent
film
oil
extract
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尚亚卓
邸宁
高峰
倪琢瑶
吕雅文
刘洪来
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Huali Shangliu Biotechnology Shanghai Co ltd
East China University of Science and Technology
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Huali Shangliu Biotechnology Shanghai Co ltd
East China University of Science and Technology
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73Polysaccharides
    • A61K8/736Chitin; Chitosan; Derivatives thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/02Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0204Specific forms not provided for by any of groups A61K8/0208 - A61K8/14
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73Polysaccharides
    • A61K8/733Alginic acid; Salts thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/80Process related aspects concerning the preparation of the cosmetic composition or the storage or application thereof
    • A61K2800/805Corresponding aspects not provided for by any of codes A61K2800/81 - A61K2800/95

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  • Dermatology (AREA)
  • Medicinal Preparation (AREA)
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Abstract

The invention discloses a double-agent unidirectional slow-release skin repairing film and a preparation method and application thereof. The repair film includes a skin care base and a crosslinking agent. The skin-care matrix is smeared on the surface of skin, the cross-linking agent is sprayed, gel films with different densities can be formed on the surface of the smeared matrix layer, and the density degree of the films can be adjusted according to different skin requirements and environments, so that multiple purposes are realized. The double-agent unidirectional slow-release skin repairing film prepared by the invention has good antibacterial activity, skin-friendly property and biocompatibility, has wide application range, can be used for medical treatment such as wound dressing, and can also be used for skin care such as facial mask, hand film, neck film, and the like, and can achieve the purpose of skin repairing. The thickness, size, shape and air permeability of the double-agent unidirectional slow-release skin repairing film prepared by the invention can be regulated and controlled according to the individual requirements of users, and the action time is controllable. Meanwhile, the adhesive is soft and close to the skin, and after the adhesive is used, the substrate directly contacted with the skin is easy to uncover without tearing.

Description

Double-agent unidirectional slow-release skin repairing film and preparation method and application thereof
Technical Field
The invention relates to the field of cosmetics and medicines, in particular to a double-agent unidirectional slow-release skin repairing film and a preparation method and application thereof.
Background
The hydrogel is a material with a three-dimensional cross-linked network structure formed by hydrophilic molecules through physical or chemical cross-linking, and is hydrophilic and insoluble in water. Hydrogel materials have good biocompatibility and biodegradability, and have recently gained wide attention in many fields such as biomedical, environmental hygiene, cosmetics, and food industries due to their excellent properties.
Hydrogels are currently used in the medical field primarily as medical dressings. The hydrogel dressing can keep the wound surface moist and continuously absorb the exudate of the wound surface as the functional wound surface dressing. Some hydrogels formed from biodegradable polymers can be degraded in time to avoid secondary damage when changing dressings. More importantly, the hydrogel dressing can be endowed with various excellent performances through structural design and functional integration, and further plays an important role in each process of wound healing. The hydrogel dressing has the advantages of high transparency, short gelation time, excellent swelling performance, wide raw material source, simple process, safety and no toxicity, and has good development and application prospects. If the hydrogel is applied to the field of skin care, the hydrogel has the advantages of softness, skin-sticking, good adjustability, convenience in use and the like.
Sodium alginate is a natural polysaccharide and is widely used in the preparation of hydrogels due to its good biocompatibility. Sodium alginate is a by-product obtained after extracting iodine and mannitol from brown algae such as kelp or Sargassum, and its molecules are composed of beta-D-mannuronic acid (M) and alpha-L-guluronic acid (alpha-L-guluronic acid, G) linked by a (1 → 4) linkage. Sodium alginate contains a large amount of-COOThe polyanion behavior can be shown in aqueous solution, and the polyanion has good water solubility, biocompatibility, viscosity and gel property. Carboxymethyl chitosan is a water-soluble chitosan derivative, is widely applied in the preparation process of hydrogel, and contains cations (-NH) on the molecular chain3+) A radical, which in turn contains an anion (-COO)) The group has the characteristics of strong antibacterial property, good biocompatibility and the like. The sodium alginate and the carboxymethyl chitosan both have biocompatibility and biodegradability, are beneficial to tissue repair, and have wide application prospects in the aspect of skin repair.
It is worth mentioning that for sodium alginate and carboxymethyl chitosan, both of them can be cross-linked with divalent cations (such as calcium and magnesium ions) to form hydrogel, and the calcium and magnesium ions are also essential nutrients for skin. The normal concentration gradient of calcium ions in the epidermis layer of the skin is an important standard for maintaining the health of the skin, and calcium chloride is used as a skin calcium supplement agent, has a good percutaneous permeation and absorption effect, and is beneficial to promoting the recovery of the barrier function of sensitive skin and damaged skin. Magnesium ions have strong anti-inflammatory and soothing effects, can be combined with water to influence the proliferation and differentiation of epidermis and promote the renewal of skin cells, and magnesium chloride is helpful for soothing and repairing sensitive skin. If the sodium alginate and the carboxymethyl chitosan are crosslinked with calcium ions and magnesium ions, the sodium alginate and the carboxymethyl chitosan can be gelatinized on the surface of the skin to form a gel film, which has a certain effect on maintaining the good state of the skin.
Based on the method, the mixed solution of sodium alginate and carboxymethyl chitosan is used as a skin care matrix, various functional components are introduced according to requirements, the skin care matrix is smeared on the action part of the skin, and calcium chloride and/or magnesium chloride aqueous solution serving as a cross-linking agent is sprayed to form gel films with different densities on the surface of the smeared matrix layer. The formed gel film has controllable size and shape, is convenient to use and can meet various skin care requirements. The application range of the film can be changed along with the difference of the compactness of the film, the film with high compactness can be used for medical treatment such as wound dressing, and the film with lower compactness can be used for skin care such as facial mask, hand mask, neck mask, and the like. The double-agent unidirectional slow-release skin repairing film prepared by the invention is green, environment-friendly, soft and skin-attached, has good adjustability and convenient use, and has wide application prospect if being applied to the aspect of skin repairing.
Disclosure of Invention
The invention aims to provide a double-agent unidirectional slow-release skin repairing film, and aims to provide a preparation method and application of the double-agent unidirectional slow-release skin repairing film.
In order to achieve the purpose, the invention adopts the following specific technical scheme:
the double-agent unidirectional slow-release skin repair film is a double-agent type, so that the convenience of use of the product is ensured. The double agent comprises a skin care matrix and a cross-linking agent.
The skin-care matrix comprises the following components in percentage by mass:
sodium alginate: 0.3% -4.0%;
carboxymethyl chitosan: 0.3% -4.0%;
the functional components are as follows: 0.001% -12.0%;
the balance of deionized water;
the cross-linking agent comprises the following components in percentage by mass:
calcium chloride: 0.4% -1.0% and/or magnesium chloride: 0.4% -1.0%;
the balance being deionized water.
Further preferably, the double-agent unidirectional slow-release skin repair film comprises a skin care matrix and a cross-linking agent.
The skin-care matrix comprises the following components in percentage by mass:
sodium alginate: 0.3% -3.6%;
carboxymethyl chitosan: 0.3% -3.6%;
glyceryl polyether-26: 8.0% -12.0%;
other functional components: 0.001% -10.0%;
the balance of deionized water;
the cross-linking agent comprises the following components in percentage by mass:
calcium chloride: 0.4% -1.0% and/or magnesium chloride: 0.4% -1.0%;
the balance being deionized water.
More preferably, the skin care matrix comprises the following components in percentage by mass:
sodium alginate: 1.6% -3.6%;
carboxymethyl chitosan: 0.3% -2.4%;
glyceryl polyether-26: 9.0% -11.0%;
other functional components: 0.1% -8.0%;
the balance of deionized water;
the cross-linking agent comprises the following components in percentage by mass:
calcium chloride: 0.5% -1.0% and/or magnesium chloride: 0.5% -1.0%;
the balance being deionized water.
The double-agent unidirectional slow-release skin repairing film is prepared by the following steps:
(1) dissolving the sodium alginate and the carboxymethyl chitosan in the ratio into deionized water, and stirring to completely dissolve the sodium alginate and the carboxymethyl chitosan;
(2) adding the functional components into the mixed solution of sodium alginate and carboxymethyl chitosan at a proper temperature, and stirring or homogenizing to uniformly mix;
(3) dissolving a proper amount of calcium chloride and/or magnesium chloride in deionized water;
(4) and (3) coating the skin-care matrix mixture obtained in the step (2) on an action part, spraying a cross-linking agent, and forming gel films with different densities on the surface of the coated matrix layer.
The amount range of sodium alginate and carboxymethyl chitosan used in the present invention is determined according to solubility and viscosity. The experimental result shows that when the concentration of the two is lower, the viscosity is lower, the adhesive force on the surface of the skin is weak, and the fixation on the target part of the skin is not facilitated; if the concentration is higher, the viscosity of the solution is higher, which is not favorable for spreading on the skin surface. Therefore, the invention selects sodium alginate: 0.3% -4.0%, carboxymethyl chitosan: 0.3% -4.0%, preferably sodium alginate: 0.3% -3.6%, carboxymethyl chitosan: 0.3 to 3.6 percent. The range of the effective components is determined by comprehensively referring to the conventional dosage and the influence on the viscosity of the system.
The cross-linking agent in the invention has the function of generating chemical bonds between the linear molecules of the sodium alginate and the carboxymethyl chitosan, so that the linear molecules are mutually connected to form a net structure. Therefore, after the sodium alginate, the carboxymethyl chitosan and the cross-linking agent are cross-linked, the formed film has good flexibility and adjustable density. If the concentration of the cross-linking agent is increased, the density of the film is increased, and conversely, if the concentration of the cross-linking agent is reduced, the density of the film is reduced. The research and experiment results show that when the concentration of the cross-linking agent is too high, the hydrogel is easy to break, and when the concentration is too low, the cross-linking time is too long. Therefore, the amount of the cross-linking agent is selected from the following components: 0.5% -1.0% and/or magnesium chloride: 0.5 to 1.0 percent.
Furthermore, in the two-agent unidirectional slow-release skin repair film, the skin care matrix further comprises an emulsifier; such emulsifiers include, but are not limited to, lauryl glucoside, decyl glucoside, polysorbate-80, and the like.
Further, the crosslinking agent includes, but is not limited to, calcium chloride, magnesium chloride, and the like.
The invention also provides a preparation method of the double-agent unidirectional slow-release skin repairing film, which comprises the following steps:
(1) dissolving sodium alginate and carboxymethyl chitosan in deionized water, and stirring to completely dissolve the sodium alginate and carboxymethyl chitosan;
(2) adding the functional components into the mixed solution of sodium alginate and carboxymethyl chitosan at a proper temperature, and stirring or homogenizing to uniformly mix;
(3) dissolving a proper amount of calcium chloride and/or magnesium chloride in deionized water;
(4) and (3) coating the skin-care matrix mixture obtained in the step (2) on an action part, spraying a cross-linking agent, and forming gel films with different densities on the surface of the coated matrix layer.
Further, in the step (1), sodium alginate and carboxymethyl chitosan are dissolved in deionized water, uniformly stirred and heated to 75-80 ℃.
Further, the functional components in the step (2) are water-soluble, and if the functional components are high-temperature resistant, the functional components are directly added into the mixed solution and uniformly stirred; if the functional components are not high temperature resistant, adding the functional components after the mixed solution is cooled to room temperature.
Further, the functional component in the step (2) is oil-soluble, and after the emulsifier and the functional component are uniformly mixed, the emulsifier and the functional component are added into the mixed solution for homogenizing and emulsifying.
Furthermore, the emulsifier is preferably a nonionic emulsifier. At the moment, the oil drops are wrapped by hydrogel formed by sodium alginate and carboxymethyl chitosan, and the double-agent unidirectional slow-release skin repairing film is substantially in a hydrogel oil-in-water structure.
Further, in the step (3), calcium chloride and/or magnesium chloride are dissolved in deionized water at the temperature of 75-80 ℃, and are uniformly stirred and cooled to room temperature for later use.
Further, in the step (4), the skin-care matrix mixture obtained in the step (2) is coated on an action part, a cross-linking agent is sprayed, gel films with different densities are formed on the surface of the coated matrix layer, the thickness, the size, the shape and the air permeability of the gel films can be regulated and controlled according to the individual needs of users, and the action time is controllable.
Further, the functional components are one or more of moisturizing, anti-inflammatory, whitening, anti-aging, repairing and anti-allergy;
the moisturizing functional component is selected from one or more of natural moisturizers or synthetic moisturizers; natural humectants include, but are not limited to, xylitol, sorbitol, sodium hyaluronate, sodium PCA, panthenol, polyglutamic acid, betaine, trehalose, aloe extract, olive fruit oil, shea butter, camellia seed oil, jojoba seed oil, walnut seed oil, shiitake seed oil, shea butter, carnauba wax, olive oil, almond oil, and the like; synthetic humectants include, but are not limited to, glycerin, 1, 2-propanediol, diglycerin, 1, 3-propanediol, dipropylene glycol, 1, 3-butanediol, glyceryl polyether-26, glyceryl glucoside, hydrogenated lecithin, and the like;
the anti-inflammatory functional ingredients comprise but are not limited to glycyrrhiza glabra, dipotassium glycyrrhizinate, glycyrrhetinic acid, centella asiatica extract, gorgonia angustifolia extract, willow bark, horse chestnut extract, curcuma longa root, hypsizygus marmoreus, resveratrol, ferulic acid, beta glucan, avenin, tripeptide-1 copper, acetyl dipeptide-1 cetyl palmitate, panthenol (vitamin B5), 4-tert-butylcyclohexanol, arnebia oil and the like;
the whitening functional ingredients include but are not limited to arbutin, ascorbic acid, vitamin C ethyl ether, sodium ascorbyl phosphate, ascorbyl glucoside, kojic acid, kojic dipalmitate, glycolic acid, tartaric acid, azelaic acid, glycyrrhiza glabra extract, marguerite extract, nicotinamide, sunflower seed oil, ellagic acid, tranexamic acid, potassium methoxysalicylate, dipropylbiphenyl glycol and the like;
the anti-aging functional ingredients comprise but are not limited to tocopherol (vitamin E), tocopherol sodium phosphate, sodium hyaluronate, fullerene, ectoin, vitronectin, grape seed extract, resveratrol, retinol, nano retinal, adenosine, retinol acetate, ginkgo biloba extract, phytosterol, ceramide, ginseng root extract, grape seed oil, evening primrose oil, cocoa butter, chamomile oil, melissa officinalis essential oil, squalane, malic acid, astaxanthin, victory peptide and the like;
the repairing functional components include, but are not limited to, azelaic acid, glycine, calamine mixture, salicylic acid, Chondrus crispus extract, mannitol, ammonium glycyrrhizinate, hydrogenated coconut oil glycerides, kudzu root extract, hydrolyzed yeast protein, EGF pericyte growth factor, etc.;
the anti-allergy functional ingredients include but are not limited to allantoin, astragaloside, purslane, scutellaria, paeoniflorin, olive leaf extract, OPC glucan A, sea buckthorn oil, biological carbohydrate gum, salvia miltiorrhiza root extract and the like.
The invention also provides application of the double-agent unidirectional slow-release skin repairing film in skin repairing.
The double-agent unidirectional slow-release skin repair film prepared by the invention can adjust the compactness of the film according to different skin requirements and environments of users, thereby realizing different purposes. When the membrane is used for medical aspects such as wound dressing and the like, the compactness of the membrane can be selectively improved, and a completely airtight membrane is formed to isolate the pollution of the external environment; when the skin care mask is used for skin care such as facial masks, neck masks and the like, the compactness of the mask can be reduced, a semi-breathable film is formed, and the skin has a good breathable environment and can be isolated from pollution of the external environment.
The invention has the beneficial technical effects that:
1. the double-agent unidirectional slow-release skin repair film prepared by the invention consists of two parts, and the outside of the film can not only lock water but also avoid the pollution of outside air by virtue of gelation; the hydrogel is arranged inside the film, so that water can be retained, and different requirements can be met by introducing different functional components.
2. The double-agent unidirectional slow-release skin repair film prepared by the invention can realize unidirectional slow release, and the density of the film can be controlled by adjusting the amount of the cross-linking agent. The thickness, size and shape of the film can be regulated according to the individual requirements of users, and the action time is controllable.
3. The double-agent unidirectional slow-release skin repair film prepared by the invention is of a double-agent type, is soft and close to the skin, and is convenient to use. After the skin-care matrix is smeared on the surface of skin, the cross-linking agent is sprayed, gel films with different densities can be formed on the surface of the smeared matrix layer, and the matrix directly contacted with the skin is easy to uncover without tearing.
4. The double-agent unidirectional slow-release skin repair film prepared by the invention has the advantages of strong flexibility, mild skin friendliness, no toxic or irritant component, no preservative and environmental friendliness, and has wide application prospect in the aspect of skin repair. The method has the advantages of simple operation, mild preparation conditions, low cost, environmental protection and no environmental pollution.
5. The invention also solves the problem of long time for dissolving the sodium alginate and the carboxymethyl chitosan. Since sodium alginate and carboxymethyl chitosan are high molecular polymers and take a long time to completely dissolve, the dissolution of sodium alginate and carboxymethyl chitosan is promoted by stirring in the invention.
Drawings
Fig. 1 is an internal microstructure of a skin care matrix of a two-agent unidirectional sustained release skin repair film.
Fig. 2 shows the soft skin-contacting property of the two-dose unidirectional slow-release skin care films according to examples 1 and 2 of the present invention (a represents example 1, and b represents example 2).
Fig. 3 is a double-agent unidirectional slow-release skin repairing film which is soft, close to the skin, controllable in size and remarkable in effect.
Fig. 4 is a picture of the efficacy of the two-dose unidirectional slow release skin-repairing film used as an eye mask in example 2 of the present invention (a is before use, b is after 15 min).
Fig. 5 is a picture of the efficacy of the two-agent unidirectional slow release skin care film used as a neck mask in example 3 of the present invention (a is before use, b is after 15min use).
Fig. 6 shows that the density of the outer gel layer of the bi-agent unidirectional slow-release skin repair membrane is controllable and the air permeability is adjustable (a is a membrane with lower density and semi-permeability, and b is a membrane with high density and air impermeability).
Fig. 7 shows the skin moisturizing condition of the volunteers after 60min using the two-dose unidirectional sustained-release skin-repairing film of example 1.
Fig. 8 shows that the gelation degree of the external gel layer of the double-dose unidirectional slow-release skin repair film is controllable.
Detailed Description
The present invention is described in more detail below with reference to examples. These examples are merely illustrative of the best mode of carrying out the invention and do not limit the scope of the invention in any way.
[ example 1 ]
(1) Weighing sodium alginate and carboxymethyl chitosan, respectively dissolving the sodium alginate and the carboxymethyl chitosan in deionized water, wherein the mass percentage of the sodium alginate and the carboxymethyl chitosan are respectively 3.6 percent and 0.4 percent, uniformly stirring the mixture at room temperature, and heating the mixture to 80 ℃;
(2) directly adding the high-temperature-resistant water-soluble functional component into the mixed liquid obtained in the step (1), and stirring and uniformly mixing. The selected functional components are glycerol polyether-26 and glycerol glucoside, and the added mass percentage contents are 10.0 percent and 2.0 percent respectively;
(3) dissolving calcium chloride in deionized water at 80 ℃, adding 0.5% by mass, uniformly stirring, and cooling to room temperature for later use;
(4) and (3) coating the skin-care matrix mixture obtained in the step (2) on the skin action part, and spraying the cross-linking agent calcium chloride solution obtained in the step (3) to form gel films with different densities on the surface of the coated matrix layer.
The obtained product is a transparent film with good flexibility, has the characteristics of softness and skin-close (as shown in figure 2a), is non-toxic and non-irritant, and has excellent moisturizing performance. The skin-care matrix is smeared on a required position, and a compact film is rapidly formed on the surface of the matrix layer after the cross-linking agent is sprayed, so that the film has good air permeability and can be pasted for a long time. And the use is convenient, the substrate directly contacted with the skin is easy to uncover, and the tearing feeling is avoided.
And (3) evaluating the efficacy:
6 volunteers were recruited for testing, and no other skin care products with moisturizing effect could be applied on the day of the test. The fixed area is selected on the face for testing, and the moisture content of the stratum corneum before and after the product is used is compared, so that the moisture content of the stratum corneum after the product is smeared is increased to 2-3 times before the product is used. And the volunteers reflect that the double-agent unidirectional slow-release skin repairing film of the invention is soft and skin-friendly (as shown in figure 3), has adjustable size and thickness, excellent moisturizing performance and more delicate skin after use, and the product is transparent and has good aesthetic property.
[ example 2 ]
(1) Weighing sodium alginate and carboxymethyl chitosan, respectively dissolving the sodium alginate and the carboxymethyl chitosan in deionized water, wherein the mass percentage of the sodium alginate and the carboxymethyl chitosan are respectively 3.2 percent and 0.8 percent, stirring the mixture evenly at room temperature, and heating the mixture to 80 ℃;
(2) directly adding the high-temperature-resistant water-soluble functional components of glyceryl polyether-26 and glyceryl glucoside into the mixed solution obtained in the step (1), and uniformly stirring. After the mixed solution is cooled to room temperature, adding water-soluble functional ingredient nano retinaldehyde, and uniformly stirring. The mass percentage of the glycerol polyether-26, the glycerol glucoside and the nano retinal are respectively 10.0 percent, 2.0 percent and 1.0 percent;
(3) dissolving calcium chloride in deionized water at 80 ℃, adding 0.5% by mass, uniformly stirring, and cooling to room temperature for later use;
(4) and (3) coating the skin-care matrix mixture obtained in the step (2) on the skin action part, and spraying the cross-linking agent calcium chloride solution obtained in the step (3) to form gel films with different densities on the surface of the coated matrix layer.
The obtained product is a yellow transparent adhesive film with good flexibility, is soft and skin-adhered (as shown in figure 2 b), has good moisturizing performance and can also play a role in resisting aging. When in use, the skin-care matrix is smeared on a required position, and a compact gel film is rapidly formed on the surface of the matrix layer after the cross-linking agent is sprayed, so that the skin-care matrix can be pasted for a long time. And the use is convenient, the substrate directly contacted with the skin is easy to uncover, and the tearing feeling is avoided. And (3) evaluating the efficacy:
10 volunteers were recruited to perform experiments, and the double-dose unidirectional slow-release skin repair membrane is applied to eyes to be used as an eye mask, and the thickness and the size of the membrane can be adjusted according to requirements. After 15min, the volunteers had a significant reduction in the eye crow's feet (as shown in table 1 below). The growth area of the fishtail line of the volunteers before and after the product is used is compared to find that the product can effectively lighten the wrinkles of the eyes (as shown in figure 4), and the skin of the eyes is smoother without irritation to the eyes. According to the reflection of volunteers, the product has no uncomfortable feeling after being used for eyes, has good effects of softening and sticking skin, removing wrinkles and resisting aging, and has good aesthetic property because the product is yellow and transparent.
Area of wrinkle growth region/mm2 Area ratio of wrinkle growth region to selected region
Before 34.4 8.06%
After 21.62 5.15%
TABLE 1
[ example 3 ]
(1) Weighing sodium alginate and carboxymethyl chitosan, respectively dissolving the sodium alginate and the carboxymethyl chitosan in deionized water, wherein the mass percentage of the sodium alginate and the carboxymethyl chitosan are respectively 2.8 percent and 1.2 percent, uniformly stirring the mixture at room temperature, and heating the mixture to 80 ℃;
(2) directly adding high-temperature-resistant water-soluble functional components of glyceryl polyether-26 and glyceryl glucoside into the mixed solution obtained in the step (1), and uniformly stirring to obtain a mixed solution A; mixing the high-temperature-resistant oil-soluble functional component squalane and emulsifier lauryl glucoside, heating to 80 ℃, and uniformly mixing to obtain a mixed solution B. And adding the mixed solution B into the mixed solution A for homogenizing and emulsifying to obtain the skin-care matrix mixture. The addition percentage of the glycerol polyether-26, the glycerol glucoside, the squalane and the emulsifier is respectively 10.0 percent, 2.0 percent, 1.0 percent and 0.5 percent;
(3) dissolving calcium chloride in deionized water at 80 ℃, adding 0.5% by mass, uniformly stirring, and cooling to room temperature for later use;
(4) and (3) coating the skin-care matrix mixture obtained in the step (2) on the skin action part, and spraying the cross-linking agent calcium chloride solution obtained in the step (3) to form gel films with different densities on the surface of the coated matrix layer.
The obtained product is a semitransparent sticking film with good flexibility, is soft and skin-sticking, is non-toxic and non-irritant, has good moisturizing performance, and can achieve the effects of resisting aging and removing wrinkles after being used for a long time. When in use, the skin-care matrix is smeared on a required position, and a compact film is rapidly formed on the surface of the matrix layer after the cross-linking agent is sprayed. And can be applied for a long time, is convenient to use, and the matrix directly contacted with the skin is easy to uncover without tearing.
And (3) evaluating the efficacy:
10 volunteers were recruited for the experiment and a two-dose unidirectional slow release skin repair membrane was used as a cervical membrane to act on the necks of the volunteers. The gel layer outside the membrane can lock water, and the effective components inside the membrane are slowly absorbed by the skin. After 15min, the wrinkles on the neck of the volunteer are obviously reduced, and the acting part is obviously white and glossy. The neck of volunteers before and after the product is used is compared to find that the product can effectively lighten wrinkles (as shown in figure 5) and has certain moisturizing performance. And the volunteers reflect that the product is soft and skin-sticking, the thickness and the size of the film are controllable, the action time is also controllable, and the wrinkle removing effect is obvious.
[ example 4 ]
(1) Weighing sodium alginate and carboxymethyl chitosan, respectively dissolving the sodium alginate and the carboxymethyl chitosan in deionized water, wherein the mass percentage of the sodium alginate and the carboxymethyl chitosan are respectively 3.2 percent and 0.8 percent, uniformly stirring the mixture at room temperature, and heating the mixture to 78 ℃;
(2) directly adding the high-temperature-resistant water-soluble functional component into the mixed liquid obtained in the step (1), and uniformly stirring. The selected functional components are glycerol polyether-26, glycerol glucoside and 1, 3-propylene glycol, and the added mass percentage contents are 10.0%, 2.0% and 3.0% respectively;
(3) dissolving calcium chloride in deionized water at 78 ℃, adding 0.5% by mass, uniformly stirring, and cooling to room temperature for later use;
(4) and (3) coating the skin-care matrix mixture obtained in the step (2) on the skin action part, and spraying the crosslinking agent magnesium chloride solution obtained in the step (3) to form gel films with different densities on the surface of the coated matrix layer.
The obtained product is a transparent adhesive film with good flexibility, is soft and skin-adhering, has good moisturizing performance, and can achieve the effects of skin tendering and moisturizing after being adhered for a long time. When in use, the skin-care matrix is smeared on a required position, and a compact film is formed on the surface of the skin-care matrix layer after the cross-linking agent is sprayed. Can be applied for a long time, and the film has adjustable thickness, controllable size and shape, easy uncovering of the substrate directly contacted with the skin, and no tearing feeling.
And (3) evaluating the efficacy:
6 volunteers were recruited for the experiment and a two-dose unidirectional slow release skin rejuvenating film was applied to the face of the volunteer. The gel layer outside the membrane can lock water, and the effective components inside the membrane are slowly absorbed by the facial skin. The water content value of the stratum corneum of the face of the volunteer before and after the product is smeared by comparison can be found, and the water content of the stratum corneum is in an ascending trend after the product is used, which shows that the product has good moisturizing performance. And the volunteers reflect that the product is soft and close to the skin, the size and the shape of the film are controllable, and the action time is also controllable.
[ example 5 ]
(1) Weighing sodium alginate and carboxymethyl chitosan, respectively dissolving the sodium alginate and the carboxymethyl chitosan in deionized water, wherein the mass percentage of the sodium alginate and the carboxymethyl chitosan are respectively 3.0 percent and 1.0 percent, uniformly stirring the mixture at room temperature, and heating the mixture to 80 ℃;
(2) directly adding the high-temperature-resistant water-soluble functional components of glyceryl polyether-26 and glyceryl glucoside into the mixed solution obtained in the step (1), and uniformly stirring. After the mixed solution is cooled to room temperature, adding water-soluble functional ingredient nano retinaldehyde, and uniformly stirring. The mass percentage of the glycerol polyether-26, the glycerol glucoside and the nano retinal are respectively 10.0 percent, 2.0 percent and 1.0 percent;
(3) dissolving calcium chloride and magnesium chloride in deionized water at 80 ℃, adding the calcium chloride and the magnesium chloride in an amount of 0.5 percent and 0.5 percent respectively by mass, stirring uniformly, and cooling to room temperature for later use;
(4) and (3) coating the skin-care matrix mixture obtained in the step (2) on the skin action part, and spraying the cross-linking agent calcium chloride and magnesium chloride mixed solution obtained in the step (3) to form gel films with different densities on the surface of the coated matrix layer.
The obtained product is a yellow adhesive film with good flexibility, is soft and skin-sticking, not only has good moisturizing performance, but also has the functions of removing wrinkles and resisting aging. When in use, the skin-care matrix is smeared on a required position, and a compact film is formed on the surface of the matrix layer after the cross-linking agent is sprayed, so that the skin-care matrix has good air permeability and can be pasted for a long time. And the thickness and the size of the film are controllable, and the substrate directly contacted with the skin is easy to uncover without tearing.
And (3) evaluating the efficacy:
10 volunteers were recruited for the experiment, and the double-dose unidirectional sustained-release skin repair film was applied to the eyes of the volunteers as an eye mask. After 15min, a significant reduction in the fishtail lines in the eyes of the volunteers was observed. The area of the fishtail line growing area of the volunteers before and after the product is used is compared to find that the product can effectively lighten the wrinkles, and the eye skin is more tender and has no irritation to the eye skin. According to the reflection of volunteers, the product is soft and skin-sticking, has no uncomfortable feeling to the skin around the eyes when in use, has good wrinkle removing and anti-aging effects, and has good aesthetic property because the product is yellow and transparent.
Compounding test research:
in the invention, after the sodium alginate and the carboxymethyl chitosan are compounded, the carboxymethyl chitosan has antibacterial property, so that no preservative is required to be additionally added. And the part directly contacted with the skin is a network interpenetrating structure of the two, and the network interpenetrating structure ensures that the material has the advantages of both inorganic materials such as toughness and high molecular materials such as elasticity. Therefore, after the sodium alginate and the carboxymethyl chitosan are compounded, the flexibility of the product is better. By controlling the variation method, only the ratio between sodium alginate and carboxymethyl chitosan is changed, and the change of the gelling time after spraying the cross-linking agent in different systems is examined (as shown in the following table 2). The results show that the gelling time is shorter when the sodium alginate content of the system is higher.
Figure BDA0003314361600000121
Table 2.

Claims (10)

1. The double-agent unidirectional slow-release skin repairing film is characterized by comprising a skin protecting matrix and a cross-linking agent;
the skin care matrix comprises the following components in percentage by mass:
sodium alginate: 0.3% -4.0%;
carboxymethyl chitosan: 0.3% -4.0%;
the functional components are as follows: 0.001% -12.0%;
the balance of deionized water;
the cross-linking agent comprises the following components in percentage by mass:
calcium chloride: 0.4% -1.0% and/or magnesium chloride: 0.4% -1.0%;
the balance being deionized water.
The double-agent unidirectional slow-release skin repairing film is prepared by the following steps:
(1) dissolving the sodium alginate and the carboxymethyl chitosan in the ratio into deionized water, and stirring to completely dissolve the sodium alginate and the carboxymethyl chitosan;
(2) adding the functional components into the mixed solution of sodium alginate and carboxymethyl chitosan at a proper temperature, and stirring or homogenizing to uniformly mix;
(3) dissolving a proper amount of calcium chloride and/or magnesium chloride in deionized water;
(4) and (3) coating the skin-care matrix mixture obtained in the step (2) on an action part, spraying a cross-linking agent, and forming gel films with different densities on the surface of the coated matrix layer.
2. The two-agent unidirectional slow release skin repair film of claim 1, wherein the skin care matrix further comprises an emulsifier; such emulsifiers include, but are not limited to, lauryl glucoside, decyl glucoside, polysorbate-80, and the like.
3. The two-dose unidirectional slow-release skin-repairing film according to claim 1, wherein the functional ingredients are one or more of moisturizing, anti-inflammatory, whitening, anti-aging, repairing and anti-allergy;
the moisturizing functional component is selected from one or more of natural moisturizers or synthetic moisturizers; natural humectants include, but are not limited to, xylitol, sorbitol, sodium hyaluronate, sodium PCA, panthenol, polyglutamic acid, betaine, trehalose, aloe extract, olive fruit oil, shea butter, camellia seed oil, jojoba seed oil, walnut seed oil, shiitake seed oil, shea butter, carnauba wax, olive oil, almond oil, and the like; synthetic humectants include, but are not limited to, glycerin, 1, 2-propanediol, diglycerin, 1, 3-propanediol, 1, 3-butanediol, glyceryl polyether-26, glyceryl glucoside, hydrogenated lecithin, and the like;
the anti-inflammatory functional ingredients comprise but are not limited to glycyrrhiza glabra, dipotassium glycyrrhizinate, glycyrrhetinic acid, centella asiatica extract, gorgonia angustifolia extract, willow bark, horse chestnut extract, curcuma longa root, hypsizygus marmoreus, resveratrol, ferulic acid, beta glucan, avenin, tripeptide-1 copper, acetyl dipeptide-1 cetyl palmitate, panthenol (vitamin B5), 4-tert-butylcyclohexanol, arnebia oil and the like;
the whitening functional ingredients include but are not limited to arbutin, ascorbic acid, vitamin C ethyl ether, sodium ascorbyl phosphate, ascorbyl glucoside, kojic acid, kojic dipalmitate, glycolic acid, tartaric acid, azelaic acid, glycyrrhiza glabra extract, marguerite extract, nicotinamide, sunflower seed oil, ellagic acid, tranexamic acid, potassium methoxysalicylate, dipropylbiphenyl glycol and the like;
the anti-aging functional ingredients comprise but are not limited to tocopherol (vitamin E), tocopherol sodium phosphate, sodium hyaluronate, fullerene, ectoin, vitronectin, grape seed extract, resveratrol, retinol, nano retinal, adenosine, retinol acetate, ginkgo biloba extract, phytosterol, ceramide, ginseng root extract, grape seed oil, evening primrose oil, cocoa butter, chamomile oil, melissa officinalis essential oil, squalane, malic acid, astaxanthin, victory peptide and the like;
the repairing functional components include, but are not limited to, azelaic acid, glycine, calamine mixture, salicylic acid, Chondrus crispus extract, mannitol, ammonium glycyrrhizinate, hydrogenated coconut oil glycerides, kudzu root extract, hydrolyzed yeast protein, EGF pericyte growth factor, etc.;
the anti-allergy functional ingredients include but are not limited to allantoin, astragaloside, purslane, scutellaria, paeoniflorin, olive leaf extract, OPC glucan A, sea buckthorn oil, biological carbohydrate gum, salvia miltiorrhiza root extract and the like.
4. A method for preparing the two-dose unidirectional slow release skin care film according to any one of claims 1 to 3, which comprises the following steps:
(1) dissolving sodium alginate and carboxymethyl chitosan in deionized water, and stirring to completely dissolve the sodium alginate and carboxymethyl chitosan;
(2) adding the functional components into the mixed solution of sodium alginate and carboxymethyl chitosan at a proper temperature, and stirring or homogenizing to uniformly mix;
(3) dissolving a proper amount of calcium chloride and/or magnesium chloride in deionized water;
(4) and (3) coating the skin-care matrix mixture obtained in the step (2) on an action part, spraying a cross-linking agent, and forming gel films with different densities on the surface of the coated matrix layer.
5. The method for preparing the two-dose unidirectional slow-release skin-repairing film according to claim 4, wherein the sodium alginate and the carboxymethyl chitosan are dissolved in the deionized water in the step (1), uniformly stirred and heated to 75-80 ℃.
6. The method for preparing a two-dose unidirectional slow-release skin-care film according to claim 4, wherein the functional ingredient is water-soluble in the step (2), and if the functional ingredient is resistant to high temperature, the functional ingredient is directly added into the mixed solution and stirred uniformly; if the functional components are not high temperature resistant, adding the functional components after the mixed solution is cooled to room temperature.
7. The method for preparing a two-dose unidirectional slow-release skin-care film according to claim 4, wherein the functional ingredient is oil-soluble in step (2), and the emulsifying agent and the functional ingredient are uniformly mixed and then added to the mixed solution for homogeneous emulsification.
8. The method for preparing the two-dose unidirectional slow-release skin-repairing film according to claim 4, wherein in the step (3), the calcium chloride and/or the magnesium chloride are/is dissolved in the deionized water at 75-80 ℃, and are stirred uniformly and cooled to room temperature for later use.
9. The method for preparing the dual-agent unidirectional slow-release skin-care film as claimed in claim 4, wherein in the step (4), the skin-care matrix mixture obtained in the step (2) is coated on an action part, a cross-linking agent is sprayed, gel films with different densities are formed on the surface of the coated matrix layer, the thickness, size, shape and air permeability of the gel films can be controlled according to individual needs of users in a targeted manner, and the action time is controllable.
10. Use of a two-dose unidirectional slow release skin repair film according to any of claims 1 to 3 for skin repair; the repairing film can be used for medical treatment such as wound dressing, and skin care such as facial mask, hand mask and neck mask, and can achieve the purpose of skin repairing: such as moisturizing, acne removing, whitening, wound repairing, etc.
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