KR950006065B1 - Beauty wash composition for using microemulsion - Google Patents

Abstract

A beauty wash composition is prepd. by i) mixing 1.0-2.0 wt.% isoester with one or more nonpolar surfactant selected from 1.5-3.0 wt.% peg-8 caprilate/ caprate, 2.0-3.0 wt.% polyglycerol isostearate, 1.5-3.0 wt.% glyceryl caprilate/ caprate, flavor etc., and dissolving to obtain the oily component (I) ii) mixing 70.0-80.0 wt.% pure water with 5.0-10.0 glycol, 0.2-0.5 wt.% salt and pigment to obtain the water component (II), and iii) mixing the obtd. (I) and the obtd. (II) to obtain the final product.

Description

Cosmetic lotion composition using micro emulsion

1 shows the microemulsion area | region by a conventional surfactant and isoester.

Figure 2 shows the microemulsion area by the polyglycerol isostearate, Fiji-8 caprylate / caprate and isoester as surfactants.

The present invention relates to making a micro emulsion using a nonionic surfactant and to a cosmetic composition using the same.

Microemulsions are usually thermodynamically stable and isotropically transparent formulations consisting of microregions of one or two kinds of liquids formed by surfactants.

Therefore, it has been used in various fields industrially because of the following advantages. That is, the microemulsion is easy to prepare, thermodynamically stable, has little change over time, and has a very small interfacial tension and high penetration ability with a particle size. However, as a disadvantage, a larger amount of surfactant is required than a conventional emulsion, and thus, a skin irritation problem has arisen in the case of a skin coating product, and thus it has been limited to use as a pharmaceutical product applied to a hair product, a detergent or a short time skin.

Therefore, the present inventors have conducted studies to solve the above problems, and as a result, a softener of isoester type and a surfactant such as glyceryl caprylate / caprate, polyglycerol isostearate, and Fiji-8 caprylate / caprate are used. By providing softness and moisturizing effect to the skin, it has good stability over time. In particular, the conventional microemulsion has used a large amount of surfactants (US Pat. No. 4,722,904). The skin irritation is induced by facilitating skin penetration of a stimulating raw material, and the present inventors have completed the present invention which can solve the skin irritation problem by stabilizing the micro emulsion using a small amount of surfactant.

Hereinafter, the present invention will be described in detail.

The present invention provides 1.5-3.0 parts by weight of Fiji-8 caprylate / caprate, 2.0-3.0 parts by weight of polyglycerol isostearate, 1.5-3.0 parts by weight of glyceryl After dissolving caprylate / caprate, fragrance, and preservatives in an oily manner, an oily ingredient is prepared. 5.0-10.0 parts by weight of glycol, 0.2-0.5 parts by weight of salt and a pigment are dissolved in 70.0-80.0 parts by weight of purified water to prepare an aqueous phase component. The aqueous phase component is gradually added, mixed and dissolved in the aqueous phase component to prepare a lotion. When it exceeds or exceeds a certain range of said weight part, it will be out of a micro emulsion area | region, or a problem will arise in safety or aging stability.

The polyglycerol isostearate used in the present invention has the following structural formula.

n: 0 or 1

m: 1 to 10

Referring to the three-phase system, as shown in FIG. 1, as a conventional surfactant, a microemulsion is formed in a region having many surfactants, but as shown in FIG. 2, polyglycerol isostearate, Fiji-8 caprylate / When caprate and glyceryl caprylate / caprate were used, a microemulsion area was formed even with a small amount of surfactant to obtain a microemulsion suitable as a lotion.

Hereinafter, the present invention will be described in detail through Examples and Comparative Examples.

TABLE 1

TABLE 2

In order to measure the effect of the said Example and a comparative example, the following test was done.

1. Stability test (skin primary irritation test)

Application: In this experiment, a patch test was conducted on 10 women in their 20s and 0.5 ml of each sample was immediately diluted 50% with sterile pure olive oil.

TABLE 3

The experiment was carried out in 10 female employees, the specific amount of each sample was buried in a fin chamber and subjected to a closed patch test on the inner side of the arm for 48 hours, and then the pin chamber was removed 4 hours later, 24 hours later, and 48 hours later. Read.

0: no irritation

1: almost no stimulus

2: slight stimulation

3: normal stimulation

4: severe stimulation

2. Stability Test

In order to evaluate the stability of the lotion composition, the samples prepared in Examples and Comparative Examples were observed at 1, 2, 1, 3, 1 year after storage at 45 ° C, 5 ° C incubator and room temperature. The stability was evaluated visually.

TABLE 4

As can be seen from the examples and comparative examples as described above, the present inventors increase the stability of the product by using a smaller amount of surfactant than the conventional microemulsion, by using a suitable surfactant and oil-soluble softener suitable for forming the microemulsion. The present invention can reduce the skin irritation.

Claims (1)

In the conventional microemulsion lotion composition, 1.0 to 2.0% by weight of one or more isoesters selected from isostearyl isostearate and isopaltic isostearate, and fiji-8 caprylate / caprate, A microemulsion lotion composition comprising 5.0 to 9.0% by weight of at least one nonionic surfactant selected from polyglycerol isostearate and glyceryl caprylate / caprate.