KR0180685B1 - Cosmetic composition for skin cleansing - Google Patents

Abstract

The present invention relates to a microemulsion-type skin cleansing cosmetic composition having a dispersed state of an oil phase / polyalcohol phase that is a non-hydrated water that does not use any water.

The cosmetic composition for skin cleansing according to the present invention comprises an oil phase of 40 to 90 parts by weight, a surfactant phase of 5 to 30 parts by weight, and a polyhydric alcohol phase of 5 to 30 parts by weight, and are excellent in aging stability, skin cleansing effect and rinsing property. .

Description

[Name of invention]

Cosmetic composition for skin cleansing

Detailed description of the invention

The present invention relates to a microemulsion-type skin cleaning cosmetic composition having a dispersed state of oil phase / polyalcohol phase (hereinafter referred to as O / P), more specifically O excellent in storage stability, detergency, and rinsability / P relates to a microemulsion-type skin cleansing cosmetic composition.

Conventionally, various skin cleaning cosmetics, such as creams, lotions, lotions, foam cleansing soaps, aqueous gels and oil-based microemulsion gels, have been used to remove color cosmetics and various skin contaminations. In particular, more powerful skin cleansing cosmetics are required due to an increase in color cosmetics and water resistance of color cosmetics. As a quality requirement of the cosmetics for skin cleansing, the skin cleansing power should be excellent, the skin irritation should be low, and the cleansing after cleansing should be fresh. In order to satisfy these quality requirements, research is being conducted, and among them, researches on creams and oil-based microemulsion gels which are excellent in removing oily pollutants and advantageous in removing color cosmetics are being actively conducted. These creams or oil-based microemulsion gels utilize the advantage of containing a large amount of oil and easily dissolving oily contaminants. However, since creams are used in a small amount of surfactants, they are inferior to oil gels, and in particular, water rinsing properties are weak, so they are removed with tissues.

In order to overcome these drawbacks, oil-based microemulsion gels have been actively studied and products have been developed recently. There are various studies on Japanese Patent No. 193426, Japanese Patent 2129110, Japanese Patent 92-062288, Japanese Patent 274799, and the like. These oily microemulsion gels are composed of a large amount of oils, surfactants and water, so they are excellent in cleaning and rinsing ability, but when they are stored or used, water evaporates, causing phase inversion, which leads to problems of preservation stability in which microemulsion gels are easily destroyed. Is holding.

The present inventors earnestly researched to overcome the drawbacks of oily microemulsion gel, and as a result, they completed the O / P microemulsion-type cosmetics, which are non-hydrated waters, which do not use water at all. Cleaning cosmetics could be made. Here, O / P microemulsion-type cosmetics are microemulsions in which the oil as the inner phase is dispersed in the outer phase composed of polyols, which have fine particles, which have transparent or translucent optical characteristics, and have excellent stability because there is no phase change under normal storage conditions. Have In addition, the oil and surfactant can be used sufficiently, so it has excellent cleaning power and when washed with water after washing, the water is supplied to change into oil-in-water (hereinafter referred to as O / W) type emulsion, which makes it easy to remove oil pollution in the skin as well as water pollution. You can do it.

Hereinafter, the present invention will be described in detail.

The present invention relates to an O / P microemulsion cosmetic composition having a composition of 40 to 90 parts by weight of an oil phase (oil component), 5 to 30 parts by weight of a surfactant phase, and 5 to 30 parts by weight of a polyalcoholic phase. In the present invention, in the oil phase, at least one of liquid paraffin, squalane, ester oil, and silicone oil was used in the maximum amount, and at least one of nonionic surfactant, anionic surfactant, and amino acid surfactant was used as the surfactant component. The polyhydric alcohol phase is the maximum amount of polyhydric alcohol having two or more hydrocarbons of OH group without additional water, wherein the polyhydric alcohol is selected from glycerin, 1,3-butylene glycol, propylene glycol, maltitol, mannitol, and propylene glycol. One or more kinds were used.

Hereinafter, the present invention will be described in detail with reference to comparative examples and examples.

EXAMPLES 1-6 AND COMPARATIVE EXAMPLES 1-2

In Comparative Examples and Examples of Table 1, Comparative Example 1 is a conventional oil-in-water cleansing cream, Comparative Example 2 is a microemulsion gel consisting of a polyalcohol phase, a surfactant, and an oil phase of water and a polyalcohol, Examples 1 to 6 are O / P microemulsion cosmetics from which moisture was removed in Comparative Example 2. As a manufacturing method, a conventional emulsification method was applied. That is, the oil phase and the polyhydric alcohol phase were heated to 75 to 80 ° C., respectively, and the oil phase was gradually added to the polyhydric alcohol phase. Then, the mixture was stirred at 4000 rpm to 6000 rpm using a homomixer and cooled to room temperature.

[Stability over time]

In order to determine the time-lapse stability of the product prepared according to Example 1-6 and Comparative Example 1-2 of Table 1, the product was placed in a transparent tube of 10 grams of capped polyethylene and room temperature (25 ° C.) and high temperature ( Table 2 shows the observed results in the low temperature (0 ° C.) and the cycle chambers (Freeze Thaw chamber, 45 ° C .-- 10 ° C., 24 hour cycle).

As shown in Table 2, while Comparative Example 1 and the water-removed O / P microemulsion type was excellent in stability over time, the microemulsion type gel of Comparative Example 2 was found to be inferior in stability, which is phase transition by evaporation of water It is presumed that the system of understanding is unsafe. In addition, it can be seen that each of the embodiments of the present invention has superior storage stability in comparison with the oil-in-water type cream type Comparative Example 1 having excellent storage stability in general.

[Skin cleansing effect]

Table 3 shows the results of measuring the cleaning effect of the product of the comparative example and the example.

As a test method, an oil cake foundation was uniformly applied to the inner part of the lower arm of each subject by applying a certain amount of 4 × 4 cm width to 30 adult men and women, and then a certain amount of the product of each Comparative Example and Example was applied. After reciprocating 50 times with constant force and weight with (applicator), wipe the foundation by pressing it twice with a constant pressure using toilet paper, and remove the remaining foundation completely with liquid paraffin. Measure the absorbance at 540nm with UV spectrophotometer and compare it with the black line The amount was measured.

As shown in Table 3, Example 1-6 showed an excellent skin cleaning effect compared to the ordinary oil-in-water cream, and showed a comparable result compared to Comparative Example 2, which is a similar formulation.

[Rinsing properties]

Rinsing was carried out a questionnaire evaluation for female subjects in their 20s to 30s, the results are shown in Table 4.

As a test method, a certain amount of sample (approximately 2 grams) of each product was taken inside the lower arm of the arm, uniformly applied, massaged for 3 minutes, rinsed with running water for 30 seconds, and then the degree of freshness was compared.

As can be seen from the evaluation results of Table 4, Examples 1-6 and Comparative Example 2 was found to be superior to the fresh feeling compared to Comparative Example 1 where the amount of the surfactant is relatively small.

As can be seen from the above experimental results, it was found that the O / P microemulsion gel according to the present invention is superior to the conventional oil-in-water type cream type or microemulsion gel in all aspects of storage stability, detergency, and rinsability.

Claims (2)

40 to 90 parts by weight of an oil phase including at least one selected from liquid paraffin, squalane, ester oil and silicone oil, and 5 to 30 parts by weight of at least one surfactant selected from nonionic surfactants, anionic surfactants and amino acid surfactants. A microemulsion-type skin cleansing composition comprising 5 to 30 parts by weight of a polyhydric alcohol comprising a polyhydric alcohol having two or more hydrocarbons without adding water. 2. The microemulsion type skin cleansing composition according to claim 1, wherein the polyhydric alcohol contains at least one selected from glycerin, 1,3-butylene glycol, propylene glycol, maltitol, mannitol and propylene glycol.