KR101125922B1 - Cosmetic composition with low viscosity - Google Patents

Abstract

The present invention relates to a cosmetic composition of low viscosity excellent in feeling, more specifically, by using a mixture of glyceryl stearate citrate and glyceryl ester-based surfactants, which is a natural anionic surfactant, the viscosity is 1,000 It is related with the low viscosity cosmetic composition which is 3,000 cPs and is stable and excellent in usability.

Glyceryl Stearate Citrate, Glyceryl Stearate / PEG-100 Stearate, Low Viscosity Emulsion

Description

Cosmetic composition with low viscosity

The present invention relates to a cosmetic composition of low viscosity excellent in feeling, more specifically, by using a mixture of glyceryl stearate citrate and glyceryl ester-based surfactants, which is a natural anionic surfactant, the viscosity is 1,000 It is related with the low viscosity cosmetic composition which is 3,000 cPs and is stable and excellent in usability.

Cosmetics are generally divided into basic cosmetics, makeup cosmetics, hair cosmetics, aroma cosmetics and body cosmetics, etc., and are classified into solubilizing products, emulsifying products, and dispersion products depending on the dosage form. Basic cosmetics are also classified into low-viscosity skin lotions according to viscosity, liquid mists, medium viscosity lotions, high viscosity essences, and high viscosity creams. Have been prepared.

In recent years, lotion formulations are becoming less popular as their boundaries with essences are fading away. Emulsions with low viscosity have been developed to differentiate the lotion formulation. However, in general, when the viscosity is low, the emulsion is easily separated into an oil phase and an aqueous phase. .

As such, making O / W emulsions with fine, uniform emulsion particles is very important for the stability of many products using other emulsions, such as pharmaceuticals, cosmetics and foods. O / W emulsions are known to vary in state and physical properties depending on the method of preparation, the type of emulsifier, and the composition of the raw materials.In particular, when two or more types of emulsifiers are used in combination, each of them is used alone. It has been reported that more stable emulsions can be obtained. Recently, stable emulsions with low viscosity have been developed by the use of continuous phase liquid crystal forming surfactants, PIT emulsification, D phase emulsification, and low viscosity emulsifiers (polymeric surfactants and glucosides).

Glyceryl stearate citrate is edible as a natural anionic surfactant that does not contain PEG. In addition, due to the mutual repulsive force of the anions, the coalescence of the particles is suppressed and is considered to be one of the emulsifiers useful for preparing low viscosity emulsions. However, this alone is also less stable than mixing with other emulsifiers. Therefore, the selection of other surfactants that aid in the formation of stable emulsions without affecting the viscosity is important.

The present inventors have tried to ensure the emulsion stability, when using a mixture of natural anionic surfactants glyceryl stearate citrate and glyceryl ester-based surfactants, the viscosity is less than 1,000 ~ 3,000 cPs, stable and excellent cosmetic feeling It was confirmed that the composition can be provided and completed the present invention.

Accordingly, it is an object of the present invention to provide a low viscosity cosmetic composition which is stable and has excellent usability.

In order to achieve the above object, the present invention provides a cosmetic composition containing a mixture of glyceryl stearate citrate and glyceryl ester surfactant in a weight ratio of 1: 0.5 to 1: 1 as an emulsifier.

The low-viscosity cosmetic composition according to the present invention was low in viscosity and stable, and was excellent in flexibility, spreadability and usability such as texture during application and after application.

Hereinafter, the present invention will be described in more detail.

In the present invention, by selecting the most suitable combination of emulsifiers in order to improve the problem of the existing emulsion, which was difficult to secure the emulsion stability, by using the appropriate amount to provide a low viscosity cosmetic composition excellent in stability and usability.

Therefore, the cosmetic composition according to the present invention contains glyceryl stearate citrate and glyceryl ester surfactant in a weight ratio of 1: 0.5 to 1: 1 as an emulsifier. The cosmetic composition according to the present invention is characterized by a viscosity of 1,000 to 3,000 cPs, preferably less than 2,000 cPs.

In addition, the cosmetic composition according to the present invention can be easily selected by those skilled in the art in addition to the emulsifiers, oil components, emulsion stabilizers, thickeners and additives commonly used in the manufacture of cosmetics in the art.

In the present invention, glyceryl stearate citrate, which is a natural anionic surfactant, is contained in an amount of 0.5 to 5.0% by weight based on the total weight of the cosmetic composition, and a glyceryl ester surfactant is added to the total weight of the cosmetic composition as an auxiliary surfactant. It may be contained in 0.5 to 5.0% by weight. In the present invention, PEG-100 stearate or glyceryl stearate / PEG-100 stearate can be used as the glyceryl ester surfactant, and glyceryl stearate / PEG-100 stearate is preferably used. At this time, the content of the emulsifier including the natural anionic surfactant and the auxiliary surfactant is a major variable in the formation of low viscosity emulsion is preferably 1.0 to 10.0% by weight relative to the total weight of the cosmetic composition. When the content of the emulsifier exceeds 10.0% by weight, the viscosity is too high because it does not match the blending ratio of the oil phase portion, and when the content is less than 1.0% by weight, the emulsifying power is dropped so that the emulsified particles are formed so large that the emulsion stability is lowered.

As the oil component used in the present invention, hydrogenated polyisobutene, isopropyl palmitate, cetylethylhexanoate, dimethicone, cyclomethicone and the like can be mixed and used in various ways. The content of the oil component is preferably 0.5 to 10.0% by weight based on the total weight of the cosmetic composition, when the content is less than 0.5% by weight, the moisturizing feeling and emollient feeling is lowered, the usability is lowered, and when it exceeds 10.0% by weight It becomes too oily and the emulsion particles become larger, resulting in poor emulsion stability.

In one embodiment of the present invention, stearic acid may be used as an emulsifying stabilizer that increases the stability of the formed emulsion, and hydrogenated vegetable oil may be used as the wax, but is not limited thereto. The content of the emulsifier stabilizer is preferably 0.1 to 5.0% by weight based on the total weight of the cosmetic composition. If the content is less than 0.1% by weight, there is a problem that the stability of the emulsion is lowered. If the content is more than 5.0% by weight, the viscosity is excessively increased, resulting in a poor feeling of use. The content of the wax is preferably 0.5 to 5.0% by weight based on the total weight of the cosmetic composition, when the content is less than 0.5% by weight, the stability of the emulsion is lowered, the moisturizing power is lowered, and when the content exceeds 5.0% by weight, the viscosity is Increases the feeling of use.

In one embodiment of the present invention, a thickener may be used to keep particles produced by emulsification not to float to the upper layer while maintaining low viscosity, and such thickeners include acrylate / C10-30 alkylacrylate cross-polymers. It is possible, but not limited to. The content of the thickener is preferably 0.01 to 5.0% by weight based on the total weight of the composition. If the content is less than 0.01% by weight, it does not play a sufficient role as a thickener, so the emulsification stability is lowered. If it exceeds 5.0% by weight, the viscosity is too high to make a low viscosity liquid solution.

In addition, in one embodiment of the present invention, the whitening component such as emulsion, arbutin and rhubarb extract containing 3,4,5-trimethoxy cinnamic acid thymol ester as an active ingredient; Or a wrinkle functional component such as adenosine and trisodium fructose diphosphate, and the like, but is not limited thereto.

Hereinafter, the content of the present invention will be described in more detail through examples and test examples. These examples are provided only for understanding the contents of the present invention, and the scope of the present invention is not limited to these examples, and modifications, substitutions, and insertions commonly known in the art may be performed. This is also included in the scope of the present invention.

Example 1 and Comparative Examples 1 to 5

According to the composition shown in Table 1 below, the cosmetics of Example 1 and Comparative Examples 1 to 5 were prepared (unit: wt%). In Examples 1 and Comparative Examples 1 to 5, glyceryl stearate citrate was used as a natural anionic surfactant, and Example 1 and Comparative Examples 2 to 5 were glyceryl stearate / PEG-100 stearate, Sorbitan sesquioleate (83), polyglyceryl-3 methylglucose distearate (TEGO CARE 450), cetearyl alcohol / cetearyl glucoside (MONTANOV 68) and behenyl alcohol / arachidyl alcohol / arachidyl glucoside It was prepared by containing (202), respectively.

Raw material name Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Surfactants Glyceryl Stearate / PEG-100 Stearate 0.4 - - - - - Sorbitan sesquioleate - - 0.4 - - - Polyglyceryl-3 Methylglucose Distearate - - - 0.4 - - Cetearyl Alcohol / Cetearyl Glucoside - - - - 0.4 - Behenyl Alcohol / Arachidyl Alcohol / Arachidyl Glucoside - - - - - 0.4 Glyceryl Stearate Citrate 1.0 1.4 1.0 1.0 1.0 1.0 Wax Stearic acid 0.35 0.35 0.35 0.35 0.35 0.35 Hydrogenated Vegetable Oil 0.7 0.7 0.7 0.7 0.7 0.7 oil Hydrogenated Polyisobutene 4.0 4.0 4.0 4.0 4.0 4.0 Dimethicone 4.0 4.0 4.0 4.0 4.0 4.0 Dimethicone / Vinyl Dimethicone Crosspolymer Cyclopentasiloxane 3.0 3.0 3.0 3.0 3.0 3.0 extract Angelica Angelica Radix Extract 81.03 81.03 81.03 81.03 81.03 81.03 Ion Blocker Sodium Phytate 0.02 0.02 0.02 0.02 0.02 0.02 pH
Regulator Tromethamine 0.1 0.1 0.1 0.1 0.1 0.1 antiseptic Glyceryl Caprylate 0.3 0.3 0.3 0.3 0.3 0.3 Thickener Acrylate / C10-30 Alkylacrylate Crosspolymer 0.1 0.1 0.1 0.1 0.1 0.1 activation
ingredient Emulsion with 3,4,5-trimethoxy cinnamic acid thymol ester 5.0 5.0 5.0 5.0 5.0 5.0

The manufacturing method of the cosmetics is as follows.

First, the oil phases of the surfactant, wax and oil were weighed into one beaker and then warmed to 75 ° C. to completely dissolve. On the other hand, the aqueous phase mixed with extract, ion blocker, pH adjuster, preservative and thickener was warmed up to 70 ℃ completely dissolved and then moved to the homogenizer to slowly increase from 3000 rpm to 10,000 rpm was added to the oil phase . After mixing at 10,000 rpm for about 5 minutes, when the temperature of the mixed phase was about 50 ° C, an emulsion containing 3,4,5-trimethoxy cinnamic acid thymol ester was administered and mixed at 7, 000 rpm for 3 minutes.

Test Example 1 Long-term Storage Stability

In order to determine the long-term storage stability of the formulation prepared in Examples 1 and Comparative Examples 1 to 5, 4 ℃, 45 ℃, 60 ℃, cycling (12 hours 45 ℃, 12 hours -10 ℃) and room temperature Each formulation was placed in an incubator and observed for 30 days, and then long-term storage stability was evaluated. The results are shown in Table 2 below.

Test substance 4 ℃ 45 ° C 60 ℃ cycling
(cycling) Room temperature Example 1 stability stability stability stability stability Comparative Example 1 stability detach detach detach stability Comparative Example 2 stability detach detach stability stability Comparative Example 3 stability stability detach stability stability Comparative Example 4 stability stability stability stability stability Comparative Example 5 stability detach detach stability stability

In the results of Table 2, in the case of Example 1 containing the emulsifier according to the present invention was confirmed to be stable regardless of the temperature change, in the case of Comparative Examples 1 to 5, the temperature is higher than room temperature or the temperature is changed cycling It confirmed that it isolate | separates on conditions.

Test Example 2 Viscosity Measurement

The viscosity of the cosmetics was measured for 2 minutes by Brookfield viscometer LVF (Brookfield viscometer LVF) at 30 ° C. the next day to prepare the cosmetics of Examples 1 and Comparative Examples 1 to 5, the results are shown in Table 3 below.

Test substance Viscosity (cPs) Example 1 1,500 Comparative Example 1 760 Comparative Example 2 4,200 Comparative Example 3 4,200 Comparative Example 4 14,000 Comparative Example 5 9,200

In the results of Table 3, the comparative example 1 did not use a surfactant showed a very low viscosity, in the case of Comparative Examples 2 to 5 using the auxiliary surfactant different from the present invention showed a higher viscosity than Example 1 . Through this result, it was confirmed that the combination of the emulsifier provided in the present invention is very effective in maintaining a low viscosity.

[Test Example 3] sensory evaluation on the feeling of use

In order to examine the feeling of use for Example 1 and Comparative Examples 1 to 5, 35 women in their 20s and 40s were allowed to use the cosmetics of Example 1 and Comparative Examples 1 to 5 for a total of 6 weeks, one week per sample. Instructions for use in place of lotion in the basic order of my skin care. Every one week after the end of the use of a sample, the sensory evaluation for flexibility, spreadability, the feeling of coating and the feeling after application was performed a total of six times, and the results are shown in Table 4 below.

<Evaluation Criteria>

5: very good, 4: good, 3: normal, 2: bad, 1: very bad

Test substance flexibility Spreadability Feel when applied Feel after application Example 1 4.5 4.7 4.2 4.5 Comparative Example 1 3.0 4.7 2.2 3.4 Comparative Example 2 4.1 3.2 2.6 2.4 Comparative Example 3 4.2 2.7 3.9 3.4 Comparative Example 4 4.5 1.7 4.5 4.2 Comparative Example 5 2.7 3.2 3.5 3.9

In the results of Table 4, in the case of using Example 1 using a mixture of glyceryl stearate citrate as a natural anionic surfactant and glyceryl stearate / PEG-100 stearate as a glyceryl ester-based surfactant Comparative Examples 1 to Compared to 5, it was confirmed that the overall usability was excellent from flexibility, spreadability, texture during application, and texture after application.

Claims (4)

Glyceryl stearate citrate as emulsifier; And PEG-100 stearate or glyceryl stearate / PEG-100 stearate; Cosmetic composition containing a mixture of 1: 0.5 to 1: 1 by weight. delete The cosmetic composition according to claim 1, wherein the cosmetic composition has a viscosity of 1,000 to 3,000 cPs. The cosmetic composition according to claim 1, wherein the content of the emulsifier is 1.0 to 10.0 wt% based on the total weight of the composition.