CN116747172A

CN116747172A - Low-temperature stable caffeine eye cream

Info

Publication number: CN116747172A
Application number: CN202310890246.XA
Authority: CN
Inventors: 帅斌; 舒鹏
Original assignee: Shenzhen Hujia Technology Co ltd
Current assignee: Shenzhen Hujia Technology Co ltd
Priority date: 2022-08-24
Filing date: 2023-07-19
Publication date: 2023-09-15

Abstract

The application provides a low-temperature stable caffeine eye cream, which comprises a coffee extract; an aqueous phase comprising a polyol; the caffeine eye cream has excellent stability at low temperature, recovers to normal temperature without abnormal precipitation, keeps good uniformity of materials, and solves the problem of low-temperature caffeine precipitation of the eye cream.

Description

Low-temperature stable caffeine eye cream

Technical Field

The application relates to the field of cosmetic formulas, in particular to caffeine eye cream stable at low temperature.

Background

The caffeine oil-in-water ointment cream on the market is quite common at present, the oil-in-water system gives the product a fresh skin feel, and the caffeine can promote the blood circulation of eyes and accelerate the absorption of the functional components in the eye cream, so that the effect of removing dark circles is quite remarkable.

For example, patent application publication No. CN1 13679646a describes an eye cream capable of sustained release for a long period of time, which can smooth fine wrinkles, tighten eye bags, promote elasticity around eyes, and repair damaged skin.

In practicing the present application, the inventors have found that there are at least the following drawbacks in the prior art:

when the use environment of the product is a season with lower air temperature or an area with generally lower temperature (such as a city in the northern area of China), consumers in the areas have low acceptance of the oil-in-water product with higher refreshing feeling, and the oil content of the oil-in-water system is low, so that the moisture retention capacity and the skin feeling are insufficient. Moreover, the solubility of caffeine in the aqueous phase decreases under low temperature conditions (5 ℃ C.) to cause precipitation of caffeine, and white precipitates are observed after the recovery of normal temperature conditions. The precipitation of caffeine not only causes the appearance of the product to change adversely, but also can influence the effect of removing dark circles of the product due to the reduction of the concentration of caffeine.

Disclosure of Invention

The application aims to solve the technical problems:

low temperature stability of caffeine eye creams.

The technical means for solving the technical problems are as follows:

polydimethylsiloxane, as a strongly hydrophobic substance, can form a natural moisture retention and water replenishing barrier, ensuring that the moisture in the body does not volatilize through the skin. 15-20% of silicone oil adopts polydimethylsiloxane which is not easy to volatilize, and the dosage of the silicone oil is increased, so that the moisturizing effect of the product can be remarkably improved, but the product becomes sticky and has poor skin feel. The inventors have unexpectedly found that the combination of 0.2-1% lauryl PEG-9 dimethicone ethyl dimethicone and 2.5-4% dimethicone (and) PEG/PPG-18/18 dimethicone gives very good skin feel and stability to the existing formulation when used as an emulsifier. The two components act together, so that the moisturizing capability of the product can be improved, the skin feel during use is improved, and the separation of caffeine can be prevented.

In one aspect, the present application provides a cosmetic composition having:

coffee extract;

an aqueous phase comprising a polyol; the weight portions of the components are calculated,

0.5 to 1 percent of inorganic salt, 15 to 20 percent of silicone oil, 4 to 7 percent of silicon elastomer, 4 to 6 percent of skin feel modifier, 0.2 to 1 percent of emulsifying agent and 2.5 to 4 percent of emulsifying thickener;

wherein the emulsifying thickener is configured as polydimethylsiloxane (and) PEG/PPG-18/18 polydimethylsiloxane; the emulsifier is configured as lauryl PEG-9 dimethicone ethyl dimethicone.

In another aspect, the present application also provides an external preparation for skin comprising any one of the aforementioned compositions.

The beneficial effects are that:

according to the cosmetic composition provided by the application, the emulsifier in the original formula, namely, the bis-PEG/PPG-16/16 polydimethylsiloxane, is replaced by the lauryl PEG-9 polydimethylsiloxane ethyl polydimethylsiloxane, meanwhile, the combination of the emulsifying thickeners, namely, the sodium acrylate/sodium acryloyldimethyl taurate copolymer, the isohexadecane, the polysorbate-80 and the sorbitan oleate are replaced by the novel emulsifying thickener, namely, the polydimethylsiloxane (and) PEG/PPG-18/18 polydimethylsiloxane, so that the caffeine eye cream provided by the application has excellent stability at low temperature, is recovered to normal temperature without abnormal precipitation, and has good homogeneity. Can solve the problem that caffeine can be separated out under the condition of low temperature of the caffeine eye cream.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are not all embodiments.

Elements and features described in one embodiment of the application may be combined with elements and features shown in one or more other embodiments. It should be noted that the illustration and description of components and processes known to those of ordinary skill in the art, which are not relevant to the present application, have been omitted for clarity.

In this context, all parts by weight herein are based on the total weight of the composition of the application, unless otherwise indicated.

In this context, all ranges defined refer to: including each specific range within a given range as well as combinations of sub-ranges between the given ranges. For example, a range of 1 to 5 specifically includes 1,2, 3, 4 and 5, and also includes sub-ranges such as 2 to 5, 3 to 5, 2 to 3, 2 to 4, 1 to 4, etc.

In this context, the range of ratios refers to: including each specific ratio within a given range and combinations of sub-ranges between the given ranges.

The application is characterized in that

The present application provides a cosmetic composition having:

coffee extract;

Optionally, the coffee extract is configured to be 1-5% by weight.

Optionally, the silicone oil is polydimethylsiloxane.

Alternatively, the silicone elastomer is polydimethylsiloxane (and) polydimethylsiloxane/vinyl polydimethylsiloxane cross-linked polymer.

Optionally, the skin feel modifier is a polydimethylsiloxane/vinyl polydimethylsiloxane cross-linked polymer.

Optionally, the inorganic salt is configured as at least one of sodium chloride, magnesium sulfate, calcium chloride.

Optionally, polypeptides including dipeptidyl diamino Ding Xianbian amide diacetate, palmitoyl tripeptide-5, acetyl octapeptide-3, and acetyl tetrapeptide-2 are also included.

The application also provides an external preparation for skin, which comprises any one of the compositions. The external preparation comprises toner, eye cream, nourishing cream, massage cream, face cleansing foam, face cleansing water, skin lotion, skin cream, body essence, shampoo, hair conditioner, bath lotion, essence or facial mask or other external skin preparations.

The application or the product using the application also comprises/can comprise the following:

coffee extract

The weight portion of the coffee extract is 1-5%.

The application is not limited in any way to the specific kind of coffee extract, and may be routinely selected according to the actual situation when the application is implemented.

Optionally, the coffee extract is selected from the group consisting of a small fruit coffee (COFFEA araica) seed extract, caffeine, small fruit coffee seed oil, and combinations thereof.

In one embodiment, the coffee extract is configured as a mixture of 2% by weight of caffeine, small fruit coffee (COFFEA araica) seed extract.

Silicone oil

The weight portion of the silicone oil is 15-20%.

The application is not limited in particular types of silicone oil, and can be routinely selected according to practical situations when the application is implemented.

Alternatively, the silicone oil is selected from the group consisting of polydimethylsiloxane, phenyl trimethicone, diphenylsiloxyphenyl trimethicone, diphenylpolydimethylsiloxane, methyl trimethicone, and combinations thereof.

In one embodiment, the silicone oil is configured as 17% by weight polydimethylsiloxane.

Silicon elastomer

The weight portion of the silicon elastomer is 4-7%.

The application is not limited in any way to the specific kind of silicon elastomer, and can be routinely selected according to practical situations when the application is implemented.

Alternatively, the silicone elastomer is selected from the group consisting of polydimethylsiloxane (and) polydimethylsiloxane/vinyl polydimethylsiloxane cross-linked polymer, cyclopentadimethicone (and) polydimethylsiloxane cross-linked polymer, dimethicone (and) cetylstearyl polydimethylsiloxane cross-linked polymer, and combinations thereof.

In one embodiment, the silicone elastomer comprises 5% by weight of polydimethylsiloxane (and) polydimethylsiloxane/vinyl polydimethylsiloxane cross-linked polymer.

Skin feel improver

The weight portion of the skin feel modifier is 4-7%.

The application is not limited in any way to the specific kind of skin feel modifier, and can be routinely selected according to practical situations when the application is implemented.

Optionally, the skin feel modifier is configured as silicones, inorganic powders, and natural powders, and combinations thereof.

Alternatively, the silicone is selected from the group consisting of polydimethylsiloxane/vinyl polydimethylsiloxane cross-linked polymer, polymethylsilsesquioxane, diphenylpolydimethylsiloxane/vinyl diphenylpolydimethylsiloxane/silsesquioxane cross-linked polymer, silica, and combinations thereof.

Optionally, the inorganic powder is selected from the group consisting of boron nitride, nylon-10/10, nylon-12, mica powder, and combinations thereof.

Optionally, the natural flour is selected from the group consisting of aluminum starch octenyl succinate, tapioca starch, corn starch, and combinations thereof.

In one embodiment, the skin feel modifier is configured as a 4% by weight polydimethylsiloxane/vinyl polydimethylsiloxane crosslinked polymer.

Inorganic salt

The weight portion of the inorganic salt is 0.5-1%.

The application is not limited in any way to the specific kind of inorganic salt, and can be routinely selected according to practical situations when the application is implemented.

Alternatively, the inorganic salt is selected from sodium chloride, magnesium sulfate, calcium chloride, and combinations thereof.

In one embodiment, the inorganic salt is configured as 1% calcium chloride by weight.

Emulsifying agent

The weight portion of the emulsifier is 0.2-1%.

The application is not limited in particular to the kind of emulsifier, and can be routinely selected according to practical situations when the application is implemented.

Optionally, the emulsifier is selected from lauryl PEG-9 dimethicone ethyl dimethicone, cetyl PEG/PPG-10/1 dimethicone, PEG-9 dimethicone ethyl dimethicone, and combinations thereof.

In one embodiment, the emulsifier is 0.5% by weight lauryl PEG-9 dimethicone ethyl dimethicone.

Emulsifying thickener

The weight portion of the emulsifying thickener is 2.5 to 4.0 percent.

The application is not limited in particular to the kind of emulsifying thickener, and can be routinely selected according to practical situations when the application is implemented.

Optionally, the emulsifying thickener is selected from the group consisting of polydimethylsiloxane (and) PEG/PPG-18/18 polydimethylsiloxane, cyclopentadimethicone (and) PEG/PPG-19/19 polydimethylsiloxane, dimethicone (and) dimethicone/polyglycerin-3 crosslinked polymer, and combinations thereof.

In one embodiment, the emulsifying thickener is configured as 3% by weight of polydimethylsiloxane (and) PEG/PPG-18/18 polydimethylsiloxane.

Fermentation product filtrate of saccharomyces cerevisiae

The application does not limit the filtrate of the fermentation product of the saccharomyces cerevisiae, and can be routinely selected according to practical conditions when the application is implemented.

In one embodiment, the weight fraction of the fermentation product filtrate of the Saccharomyces cerevisiae is 5%.

Preservative agent

The application does not limit the weight parts of the preservative, and can be routinely selected according to practical situations when the application is implemented.

Optionally, the preservative is 0.5% by weight.

The application is not limited in any way to the specific kind of antioxidant, and may be routinely selected according to the actual situation when the application is practiced.

Optionally, the antioxidant is p-hydroxyacetophenone.

Chelating agent

The application is not limited in any way by the parts by weight of the chelating agent, and can be routinely selected according to practical situations when the application is implemented.

In one embodiment, the chelating agent is present in an amount of 0.05% by weight.

The application is not limited in any way to the specific kind of chelating agent, and may be routinely selected according to practical circumstances when the application is practiced.

Optionally, the chelating agent is disodium EDTA or sodium citrate.

In one embodiment, the chelating agent is 0.05% disodium EDTA by weight.

Emollient(s)

The present application is not limited in any way to the specific type of emollient and may be routinely selected according to the circumstances when practicing the present application.

Optionally, the emollient is 4.2 to 6.2% by weight.

Optionally, the emollient comprises isononyl isononanoate, dioctyl carbonate, caprylic/capric triglyceride, isohexadecane, isododecane, and combinations thereof.

In one embodiment, the emollient is configured to contain, in parts by weight, 2% isononyl isononanoate and 3% dioctyl carbonate.

Polyhydric alcohol

The polyol is not limited in any way, and may be conventionally selected according to practical circumstances when the present application is carried out.

Alternatively, the polyol includes 1, 2-hexanediol, 1, 2-pentanediol, glycerol, 1, 3-propanediol, glycerol polyether-26, butanediol, and combinations thereof.

In one embodiment, the polyol comprises: 0.8% of 1, 2-hexanediol, 2% of 1, 2-pentanediol, 5% of glycerol and 3% of butanediol.

Coloring agent

The application is not limited in any way to the coloring agent, and can be routinely selected according to practical situations when the application is implemented.

In one embodiment, the colorant is configured as a 0.1% caramel color in parts by weight.

Example 1

Experimental example 1 and comparative example 1 were set, in which:

the formulation of experimental example 1 was the caffeine eye cream of the present application, and the formulation of comparative example 1 was the caffeine eye cream of the prior art. The specific components of experimental example 1 are shown in table 1, and the specific components of comparative example 1 are shown in table 2.

The preparation method of the experimental example 1 comprises the following steps:

s1, adding the components with the serial numbers of 1-8 into a water pot, heating to 80-85 ℃, homogenizing at a high speed for 5 mm until the components are uniformly dispersed, and then starting cooling water to cool to normal temperature for standby.

S2, adding the components with the serial numbers of 9-15 into an emulsifying pot, and uniformly dispersing; starting the emulsifying pot to stir, adding the materials in the step S1 into the emulsifying pot for 3 times, starting to homogenize after the addition is finished, and homogenizing for 10min. Sequentially adding the components with the serial numbers of 16-19, and uniformly stirring; sampling and inspecting, and taking out the pot after inspection is qualified.

TABLE 1

TABLE 2

Experimental example 1 and comparative example 1 were prepared according to the aforementioned preparation method, and the appearance state after room temperature recovery was checked according to the schedule time at 4℃and-15℃respectively, and the stability was observed for 3 months, and the results are shown in Table 3.

TABLE 3 Table 3

Temperature (temperature)

Day 0

Day 3

Week 1

Week 2

Week 4

Week 8

Week 12

Comparative example 1

4℃

Normal state

White precipitation

Comparative example 1

15℃

Normal state

White precipitation

Experimental example 1

4℃

Normal state

Experimental example 1

15℃

Normal state

As can be seen from the results of table 3, compared with comparative example 1, the caffeine eye cream of the present application (experimental example 1) had no abnormal precipitation of the material after the temperature was restored to normal temperature, and the material state was kept uniform, and the problem of caffeine precipitation was solved by the present application.

Example 2

Experimental example 2 and comparative example 2 were set, in which:

experimental example 2 was prepared with reference to the formulation and preparation method of experimental example 1, and comparative example 2 was prepared with reference to the formulation and preparation method of comparative example 1. The specific components of experimental example 2 are shown in table 1, and the specific components of comparative example 2 are shown in table 2.

Experimental example 2 and comparative example 2 were each placed in an environment of 40 ℃ for one month, and then caffeine concentrations therein were each detected by chromatography. The results are shown in Table 4.

TABLE 4 Table 4

As can be seen from the results of table 4, the caffeine concentration of the caffeine eye cream (experimental example 2) prepared according to the application was 93.75% of the initial caffeine content at a high temperature condition over 30 days, which is significantly higher than that of comparative example 2 (81.25%), compared to comparative example 2, indicating that the application is more advantageous in maintaining caffeine activity than the prior art.

Example 3

The embodiment is a caffeine eye cream prepared by applying the technical scheme of the application. The specific formulation is shown in table 5.

TABLE 5

The formulation of example 2 also included:

allantoin has tissue protecting, hydrophilic, water absorbing, and water distribution preventing effects.

The dipeptide diamino Ding Xianbian-base amide diacetate can play the role of resisting wrinkle and aging.

Palmitoyl tripeptide-5 can play a role in increasing collagen, so that fine lines are invisible and the skin is firm.

Acetyl octapeptide-3 can play an anti-wrinkle role.

Acetyl tetrapeptide-2 can increase elastin synthesis amount and smooth wrinkles.

All other embodiments, which can be made by a person skilled in the art based on the embodiments of the application without any inventive effort, are intended to fall within the scope of the application.

Modifications of the technical solutions described in the above embodiments or equivalent substitutions of some technical features thereof may be made by those skilled in the art; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A caffeine eye cream composition, comprising:

coffee extract;

2. The composition according to claim 1, wherein the coffee extract is configured in a weight fraction of 1-5%.

3. The composition of claim 1, wherein the silicone oil is polydimethylsiloxane.

4. The composition of claim 1 wherein the silicone elastomer is a polydimethylsiloxane (and) polydimethylsiloxane/vinyl polydimethylsiloxane cross-linked polymer.

5. The composition of claim 1 wherein the skin feel modifier is a polydimethylsiloxane/vinyl polydimethylsiloxane cross-linked polymer.

6. The composition of claim 1, wherein the inorganic salt is configured as at least one of sodium chloride, magnesium sulfate, calcium chloride.

7. The composition of claim 1, further comprising a polypeptide comprising a dipeptide diamino Ding Xianbian-yl amide diacetate, palmitoyl tripeptide-5, acetyl octapeptide-3, and acetyl tetrapeptide-2.

8. A skin external preparation comprising the composition according to any one of claims 1 to 7.