KR950006059B1 - Non-emulsification type foundation composition - Google Patents

Abstract

A non-emulsification type foundation composition is composed of water component containg buffer solution and 0.1 wt.% xanthan gum, 0.1 wt.% polyvinyl alcohol, 0.4 wt.% aluminium silicate and 0.3 wt.% sodium magnesium silicate-contg. viscouse base, high fatty acid alcohol and pigments. The buffer solution is pH 5.9-7.0 sodium phosphate buffer soln. or 0.01-0.1 M potassium phosphate buffer soln. The high fatty acid alcohol is stearyl alcohol and setyl alcohol.

Description

Non-Emulsifying Foundation Composition

The present invention relates to a non-emulsifying foundation composition which does not contain an oil component and satisfies the foundation effect.

In more detail, the present invention is based on the polymer in the aqueous component to maintain the stability and usability, improve the dispersion stability of the pigment and to improve the acidity of the composition, the purified water as a buffer solution to improve the pH and stability of the product It relates to a non-emulsifying weakly acidic foundation composition characterized by maintaining.

In general, the foundation is evaluated for its quality according to the makeup effect, usability and skin stability, etc., the cosmetic effect such as color expression, moisturizing power and the like should be excellent in texture and spread when applied to the skin, and should not burden the skin. In order to ensure good usability, adhesion and skin safety, foundation products made with a slightly acidity that is close to skin pH are preferred.

Conventional emulsified foundation cosmetics contain oil in order to increase the softness and flexibility, and has a high oil ratio, so that it can be emulsified even by using a nonionic surfactant or an emulsified condition in the form of soap. It was hard to give a feeling of neat usability. In addition, it is difficult to control the amount of emulsifier and because the presence of oil has a pH of 8.0 or more, it is difficult to manufacture a foundation of less than neutral, resulting in worsening or causing acne in women with seborrheic skin or women with acne. Caused.

The hypoallergenic cosmetics currently on the market have improved these points slightly compared to general emulsion foundations, but also contain oils, so it is difficult to fundamentally eliminate irritation. There is also an emulsified foundation composed of oil-based components of higher fatty alcohols or higher fatty acids and emulsifiers without oil, but also emulsifiers are included in the emulsification conditions, so it is difficult to prepare a foundation of weakly acidic pH.

Accordingly, an object of the present invention is to provide a non-emulsifying foundation composition having all of the functions of a general emulsified foundation, showing an acne-preventing effect and an acne-inhibiting effect, having no skin irritation as a weak acidic pH, and having excellent skin safety.

Foundations generally consist of aqueous and oily ingredients, pigments and other additives. The aqueous component is usually composed of a moisturizer, a pigment dispersant, a preservative, and the like, and the properties of the entire foundation largely depend on the composition ratio of the aqueous component. Oily components are composed of emulsifiers, emulsifying waxes, oils and emulsifying aids. Alkali and fatty acids such as triethanolamine are used as emulsifiers, sesquioleic acid sorbitan, or monostearic acid polyoxyethylene sorbitan. Almost essentially contains beeswax, liquid paraffin and ester oils.

In the present invention, without the oil component as described above, the invention has been invented a new foundation composition excellent in usability, safety and product stability than the foundation containing the oil component.

In the present invention, the fatty acid alcohols are mainly composed of an aqueous component, a pigment, and a viscosity modifier.

The most important part in the preparation of the foundation is the uniform dispersion of the pigment in the aqueous component, which dispersion stability greatly influences the product color and stability. The dispersing effect is different depending on the type of dispersant and the pigment properties included in the aqueous component, but in the present invention, by using the properties of the pigment without using a dispersant, using a buffer solution to increase the dispersion effect and stability of the product and to adjust the pH It was. That is, the pigment is maintained in stability by the intermolecular electrostatic repulsive force. In order to give such electrostatic repulsive force, the dispersion effect was enhanced by increasing the electrostatic repulsive force between molecules with buffer solution of phosphate system. At this time, the pH of the buffer solution can be adjusted to 5.8 to 7.0, but the dispersion effect is less than 5.8 or less color effect does not appear and can be prepared in weakly acidic foundation expected in the present invention above 7.0.

In the pH adjustment, conventionally, oils and surfactants were contained and could not be lowered to neutral or lower, and it was difficult to maintain the stability of the product without using oils or surfactants, and manufacturing was difficult.

In the case of a conventional foundation, a small amount of thickener was used to maintain viscosity, stability, and usability, because the viscosity was increased due to the large amount of oil and wax and the usability was lowered, so that other contents were impossible. However, in the present invention, the synergistic effect of the mixing of the four thickeners of the polymer system used in the general foundation and the usability and stability of the product were maintained.

As a pigment component, in order to enhance the dispersion effect according to a dispersion system, the pigment itself was hydrophilized and dispersed in an aqueous component. In the present invention, conditions for increasing the dispersion effect regardless of any pigment or pigment used as a cosmetic raw material were set. . That is, it was possible to select and use a pigment suitable for the purpose of use.

As the preservative, paraoxybenzoic acid methyl and imidazolidinyl urea are used as raw materials for general cosmetics. Propylene glycol and glycerin were used as moisturizers, and additives and flavors were prepared.

In the present invention, the aqueous mixture mainly consists of a thickener base and a buffer solution, and the thickener portion was prepared by using the base to have each characteristic of the thickener.

In his composition, 10% thickener base was used, adding 0.1% by weight of xanthan gum, 0.4% by weight of aluminum magnesium silicate, 0.1% by weight of polyvinyl alcohol, 0.3% by weight of sodium magnesium silicate, and 9.1% by weight of water. . 10% of the thickener base according to the present invention was applied to the product, which has a synergistic effect since the composition ratio is well combined in the thickeners, and the synergistic effect is lowered at a content other than the composition ratio of the thickener. At 0.1% or more of xanthan gum, the thickening effect is strong, and the viscosity is high and sticky. At 0.1% or less, the thickening effect is inferior. Pigment adhesion occurs when dispersing the pigment. Film formation is too strong at 0.1% or more in polyvinyl alcohol. Decreased cosmetic effect and less than 0.1% film formation is weak. Sodium magnesium silicate less than 0.3% of the thickening effect and less than 0.3% of the touch as a foundation is inferior. Magnesium aluminum silicate is more than 0.4% strong stickiness, 0.4% or less poor stability. Purified water is used in cosmetics, except powder products, as a main ingredient of cosmetics. In the present invention, a buffer solution is used instead of purified water in order to increase the pH control and dispersion effect.

The buffer solution used potassium phosphate or sodium phosphate so that phosphoric acid is included as a common ion. Since the preparation method is prepared with weak acid and weak base, potassium phosphate buffer solution is prepared with monovalent potassium phosphate and divalent potassium phosphate, respectively. Sodium phosphate buffer was prepared from sodium phosphate and divalent sodium phosphate.

The pH was 5.8 to 7.0, and the concentration had the best dispersion and color effects at 0.01 to 0.1 mole. Dispersion effect is lowered below pH 5.8, dispersing effect is higher than 7.0, but it is difficult to prepare weakly acidic foundation. The buffer solution concentration is 0.1 molar or more, the skin irritation and ionic strength is strong dispersing effect is less than 0.01 mole dispersing effect is not high because the color effect is falling in the present invention pH 5.5 to 7.0 in phosphate buffer solution 0.01 to 0.1 mole It was preferably applied to the present invention. The higher fatty acid alcohol used as a cosmetic raw material used stearyl alcohol and cetyl alcohol slightly, and monostearic acid polyoxyethylene sorbitan (20EO) and sesquioleic acid sorbitan were respectively used to enhance the dispersion of flavor and additives. It is suitable that the weight ratio is 75-85: 1-3: 10-20 with respect to the total foundation 100 as a component including a higher fatty acid alcohol and a flavor dispersant, and the most preferable composition has a weight ratio of 83.4: 1.6: 15 Phosphorus composition.

The foundation prepared by mixing the components of the composition ratio as described above is a weak acidic foundation having a pH of 5.8 to 7.0, and is a non-emulsifying foundation having strong skin stability and adhesion and excellent color effect.

The composition ratio of the thickener base and the buffer solution in the non-emulsifying foundation composition according to the present invention is shown in Table 1 below.

TABLE 1

After heating water (ion-exchanged water) to 60 ° C, xanthan gum is dispersed, sodium magnesium silicate and aluminum magnesium silicate are mixed and dispersed, and then heated to 75 ° C to slowly add polyvinyl alcohol to disperse.

At this time, a thickener base was prepared by using a homomixer (T.K HOMO MIXER manufactured by TOKUSHU KIKA Co., Ltd.) at 3,000 rpm for 30 minutes for each step.

As the buffer solution, sodium phosphate buffer and potassium phosphate buffer solution are used. Sodium phosphate buffer solution is prepared by preparing 0.01 to 0.1 mole of monovalent sodium phosphate and 0.01 to 0.1 mole of divalent sodium phosphate, respectively, in a molar to molar ratio. It carried out and prepared and used pH 5.8-7.0. Potassium phosphate buffer solution was also prepared in the same manner. The pigment is dispersed in the aqueous component (buffer solution) prepared in this way, the thickener base and the aqueous component are mixed and heated and dispersed to 75 ° C, and then the fatty alcohol, additives and fragrance stabilizer are heated and mixed to 80 ° C, and then gradually cooled. The non-emulsifying foundation according to the present invention was prepared by adding fragrance.

Hereinafter, the non-emulsifying foundation according to the present invention will be described in detail with reference to Examples and Comparative Examples.

[Examples 1-18 and Comparative Examples 1-5]

TABLE 2

TABLE 3

TABLE 4

As a comparative composition for evaluating the quality of the non-emulsifying foundation composition of the present invention, a foundation was prepared by the composition ratio of the components shown in Table 5 below. As a dispersant for pigments, a dispersant (triethanolamine and stearic acid consisting of 1: 2) and purified water, which are generally used, were used. The thickener base was selected from two types of thickeners, and an oil-based foundation was used as a comparative example. Prepared in each.

TABLE 5

The effect of the foundation prepared according to the Examples and Comparative Examples was evaluated in the following manner.

i) Usability, make-up effect (color effect), adhesion

100 women aged 18 to 40 years were subjected to make-up with the foundations prepared in Examples and Comparative Examples, and then evaluated for usability, color effect and adhesion as follows. The rating of each user is the best 5 to the bad The average of 100 points by rating between 1 and 4.0 is very good. 3.0 or better. Usually over 2.0, under 2.0 was bad.

Very good: ◎

Good: ○

Normal: △

Bad: ×

ii) safety

The foundations prepared in Examples and Comparative Examples were observed using a circulating temperature method, which was allowed to stand at 45 ° C. and −5 ° C. for 1 day, respectively, and evaluated as follows according to the number of cycles when the phases of the product were separated.

2 times or less (bad): ×

3 times (usually): △

4 times (Good): ○

5 or more times (very good): ◎

iii) stability

1. 100 women aged 18 to 40 years old were subjected to a patch test on their arms and back and evaluated as follows according to the degree of red spots.

2 people or less: ◎

3 to 7 people: ○

8 to 10 people: △

11 or more: ×

2. The first irritant allergy test was performed.

This study was conducted with 30 women who had allergies or women who experienced allergies.

There is no irritation: ◎

Slightly irritating: ○

Stimulation is a bit severe: △

Irritation is very severe: ×

iv) measurement of dispersion effect

The pigment was dispersed in an aqueous component, placed in a test tube, and measured according to the degree of precipitation of the pigment. If the dispersing effect is good uniformly, there is no phenomenon that the pigments are entangled with precipitation.

Dispersion effect is very good: ◎

Excellent dispersion effect: ○

Dispersion effect is normal: △

Dispersion is bad: ×

v) vesicle formation (acne generation) characteristics

Tissue formation (acne formation) was measured.

55 New Zealand white rabbits were applied to the rabbit's ears, and 0.5 ml of cosmetics were applied to the rabbit's ears five times a week for three weeks, and then the rabbit's ears were cut off and the foreskin was removed and observed 10 times under a stereoscopic microscope. The remaining tissues were fixed in 10% buffered formalin solution for observation of pathology and observed under optical microscope and evaluated as follows based on the degree of epicytosis and keratosis of epidermis and hair follicles.

0: no difference from control group

1: slight increase in keratin in hair follicles

2: when keratin is clearly present in the follicle cavity

3: keratinous increase in follicle cavity, follicles slightly expanded and follicles proliferated

4: keratin is full and follicles are expanded and follicle epithelium is severely proliferated

5: sebaceous gland and catheter due to proliferation of follicle epithelium

The evaluation test results for the foundation prepared by the component composition ratios shown in Tables 2, 3, and 4 (Examples 1-18) and the foundations prepared by the composition ratios of the components shown in Table 5 (Comparative Examples 1-6) It is presented in Table 6 below.

TABLE 6

As shown in the table above, as a result of measuring the usability, adhesion, color effect, dispersibility, safety, stability, and scleroform (acne) for the foundation of the example and the foundation of the comparative example (four cases), the present invention Since the foundation of the Example according to the foundation was prepared using a constant amount of thickener base, the usability is much superior to the comparative example, and in terms of skin adhesion and sclerosis, it was superior to the comparative example and prepared as a buffer solution. Therefore, the dispersion effect is high and the color effect, safety and stability are excellent. Although the dispersant was also used in the comparative example, the dispersing effect was lowered and the color effect and stability were lowered. In addition, since the foundation prepared using the oil and wax of the comparative example is a cotton cloth is formed, the skin safety is poor, and because the emulsification using an emulsifier could not be prepared to the pH below neutral. Dispersion effect has a great influence on color effect and stability, especially in case of poor dispersibility (comparative example) and in the case of foundation containing oil, the pigment color change is severe due to the action of oil and pigment and dispersibility If it is bad, it is difficult to produce a natural color because the pigment is not developed, but in the embodiment, the color of the pigment is similar to the color of the product to produce a natural and concealable color when applied to the skin. Overall, it contains oil and thickener base, and it has all the advantages of conventional emulsified foundation and cosmetic functional requirements when formulating foundation in buffer solution. It is close to skin pH and safe, prevents acne formation. Is considered to be an excellent foundation.

Claims (3)

Non-emulsifying foundation composition consisting of an aqueous component including a buffer solution and a thickener base, a higher fatty acid alcohol and a pigment. The thickener base is 0.1 weight% xanthan gum, 0.1 weight% polyvinyl alcohol, based on 100 weight% of the total foundation composition. Aluminum magnesium silicate 0.4% by weight, sodium magnesium silicate 0.3% by weight. The non-emulsifying foundation composition according to claim 1, wherein the buffer solution is 0.01-0.1 mol of sodium phosphate buffer solution or potassium phosphate buffer solution of pH 5.9-7.0. The non-emulsifying foundation composition according to claim 1, wherein the higher fatty acid alcohols are stearyl alcohol and cetyl alcohol.