KR100481631B1 - Face wash cosmetic composition - Google Patents

Abstract

The present invention relates to a facial cleansing composition which is characterized by containing higher alcohol, wax, polyhydric alcohol, and natural surfactant, as well as excellent in removing aging keratin and having hypoallergenic safety.

Description

Facial wash composition

The present invention relates to a facial cleansing composition which is characterized by containing higher alcohol, wax, polyhydric alcohol, and natural surfactant, as well as excellent in removing aging keratin and having hypoallergenic safety.

In recent years, the importance of keratin cleaning has emerged from the fact that the dullness of the skin is closely related to the neutralization of aged skin keratin. As described in the literature (Fragrance Journal, February 24, 1996, Vol. 2, pp. 181, pages 9-12), the stratum corneum is inherently translucent, so when the aging keratin accumulates, the thickness of the stratum corneum increases and the skin clarity decreases. As a result, the accumulated stratum corneum dries the skin surface, reducing the skin's gloss. In other words, the decrease in skin clarity and skin gloss caused by the aging stratum corneum cause skin dullness. Therefore, WO 9427569A1 proposes a cosmetic composition mainly composed of α-hydroxy acid (hereinafter referred to as "AHA") for the purpose of removing the aged keratin and reducing the thickness of the stratum corneum. US Patent No. 4975218 And Korean Patent Application No. 94-36201 disclose a cleansing cosmetic composition and foam cleansing agent of a transparent gel type having excellent cleaning power. However, since the cosmetic composition using AHA for exfoliation showed a problem of skin irritation by AHA, as a solution thereof, a cosmetic composition was developed using buffer AHAs to reduce skin irritation caused by AHA. (See French Patent No. 2720643), which also did not reach a satisfactory effect. In addition, due to the characteristics of the transparent gel-type composition or foam cleansing formulation, the irritation caused by the higher fatty acid soap whose main component is an anionic surfactant could not be excluded, and the exfoliation power was also not excellent.

Accordingly, the present inventors have intensively studied the phase behavior between the natural-induced surfactant and the water phase (two phases) in order to develop a cleansing cosmetic composition having excellent cleaning power and low skin irritation. And when used with wax, it confirms that it forms Multilamellar Liquid Crystal (hereinafter referred to as MLC), and when it is applied to the skin and massaged, it is easily crystallized with the evaporation of water and exerts a scrubbing effect. As a result, the present invention has been completed. That is, by containing a hypoallergenic natural surfactant and higher alcohols, waxes and polyhydric alcohols, it is possible to provide a face wash composition having excellent exfoliation power, hypoallergenic and washable with water. Hereinafter, the configuration of the present invention will be described in detail.

The present invention relates to a face wash composition comprising a higher alcohol, a wax, a polyhydric alcohol and a natural surfactant having 10 to 22 carbon atoms.

Natural surfactants that may be used in the face-wash cosmetic composition according to the present invention include ester-type surfactants formed by condensation of naturally occurring sugars, that is, hydroxy groups of glucose or sucrose with carboxylic acid groups of 10 to 22 carbon atoms and One or more selected from ester type surfactants formed by condensation of a hydroxy group of a polyglycerol represented by Formula 1 with a carboxylic acid group of 10 to 22 carbon atoms may be mentioned.

[Formula 1]

In the formula, n represents an integer of 1 to 4.

Specific examples of such natural surfactants may include one or more selected from methylglucose sesquistearate, polyglycerolmethylglucose distearate, sucrose stearate, sucrose laurate and polyglyceryl-4-isostearate. It is used in the range of 2 to 20% by weight. This is because when used at less than 2% by weight, the formation of MLC is insufficient and when used at more than 20% by weight, MLC is well formed, whereas skin irritation is observed due to the use of excess surfactant.

As the wax, one or more selected from canova wax, candelilla wax, beeswax, lanolin, paraffin, ceresin and microcrystal waxes having a crystalline structure at room temperature may be used. If the MLC is not well formed and the content exceeds 20% by weight, the use feeling is deteriorated. Therefore, the MLC is preferably contained in an amount of 1 to 20% by weight.

As the polyhydric alcohol, one or more selected from glycerin, 1,3-butylene glycol, propylene glycol, sorbitol and maltitol can be used. If the polyhydric alcohol is contained in less than 2% by weight in the composition, the moisturizing property and spreadability of the product is not good, and if it contains more than 20% by weight, it is undesirable due to the stickiness and thick feeling of the moisturizer itself, so it is used in the range of 2 to 20% It is desirable to.

Higher alcohol is used in this range because the same problems as in wax can occur when used in an amount outside the range of 1 to 20% by weight.

In addition to the components described above, the face-wash cosmetic composition according to the present invention contains 50 to 75% by weight of ion-exchanged water, in addition to water-soluble dyes (yellow No. 4, yellow No. 5, etc.), fragrances, preservatives (methyl paraben, ethyl paraben, etc.) At least one component selected from chelating agents (EDTA-2Na and the like) and antioxidants (BHT and the like) may be optionally added. What component is contained in what content is matter which can be determined very easily by those skilled in the art to which this invention belongs according to the objective at that time.

On the other hand, while the face wash composition is generally divided into a wash off type and a tissue off type, the face wash composition according to the present invention can be used in both forms, in particular, wash off ) Can show a good effect.

Hereinafter, the present invention will be described in more detail based on the following Examples and Experimental Examples. However, these Examples and Experimental Examples are only for the understanding of the present invention, but the scope of the present invention in any sense is not limited to these Examples.

Examples 1-2

According to the composition as shown in Table 1, the water source raw materials 1 to 5 and oil phase components 6 to 10 were heated to 78 to 80 ℃, respectively. Thereafter, the oil phase was slowly added to the aqueous phase, and stirred at 4000 rpm for 5 minutes using a homomixer, and cooled to 28 to 30 ° C to prepare the face-wash cosmetic composition of Examples 1-2.

TABLE 1

week)

1.Unit: wt%

2. Product Name: Grillocose PS (Grillo Company)

3. Product Name: Tegocare 450 (Gold Schimit)

Comparative Example 1

According to the composition of Table 2, the aqueous phase components 1 to 4 and the oil phase and the surfactant components 5 to 10 were heated to 78 to 80 ℃, respectively. Thereafter, while adding an oil phase to the aqueous phase, the mixture was stirred at 4000 rpm for 5 minutes using a homomixer, cooled, and added to AHA when it reached 50 ° C. After stirring again for 3 minutes, it was cooled to 28 to 30 ℃ to prepare an emulsion composition.

TABLE 2

Note) Unit: weight%

Comparative Example 2

According to the composition of Table 3, the aqueous phase components 1 to 4 and the oil phase components 5 to 8 were each heated to 78 to 80 ℃, and then carried out in the same manner as in Examples 1 to 2 to prepare a face-wash cosmetic composition.

TABLE 3

Note) Unit: weight%

In order to evaluate the irritation and exfoliation power of the face-wash cosmetic composition of Examples 1 to 2 and Comparative Examples 1 to 2 as described above, a skin primary irritation test was performed as follows and the exfoliation effect was measured.

Experimental Example 1: Evaluation of Skin Primary Irritation

The cosmetic compositions of Examples and Comparative Examples were buried in each patch test pin chamber and fixed with tape for 24 hours inside the lower arm of 20 healthy men and women, and then the pin chamber was removed and the result was read after 2 hours. The determination was performed based on the visual determination criteria table of Table 4 below, and the stimulus degree was calculated based on Equation 1 below. The results are shown in Table 5.

TABLE 4

Visual judgment standard table

[Equation 1]

TABLE 5

Skin irritation test result

By determining the results of Table 5 based on the stimulation determination criteria table of Table 6, the facial cleanser composition of Examples 1 to 2 according to the present invention is significantly less irritant to the skin than the compositions of 1-2 Could know.

TABLE 6

Stimulus judgment standard table (based on the judgment value of the grade)

Experimental Example 2: Measurement of the exfoliation effect

In order to measure the exfoliation effect of the face-wash cosmetic composition according to Examples 1 to 2 and Comparative Examples 1 to 2 were tested as follows.

0.4 ml of 10% DHA (Dihydroxy acetone) solution was placed in a Hill top chamber and attached to the upper arm of the tester for 1 hour and then removed. In order to increase the degree of coloring, after 6 hours, the resultant was treated with DHA solution and colored again. Using a colorimeter (MINOLTA, CROMA-METER CR-200), the skin treated with DHA solution and the DHA solution were measured for 24 hours after the treatment. Subsequently, the sample is applied to the colored skin every day, and then treated for 1 minute by rinsing with a shower of lukewarm water, and the L, a, and b values of the colorimeter measured over time are substituted into Equation 2 below. The exfoliation effect was measured by calculating.

[Equation 2]

In the above equation,

L 'represents the L value of the skin before pigmentation,

a 'represents the a value of the skin before pigmentation,

b 'represents the b value of the skin before pigmentation.

As the ΔE decreases over time, the exfoliation effect is evaluated as excellent, and the results are shown in Table 7 below.

TABLE 7

Evaluation result of keratin exfoliation effect

NOTE The initial measurement is the result of 24 hours after treatment with DHA.

As can be seen from the results in Table 7, the compositions of Examples 1 and 2 were much smaller than the compositions of Comparative Examples 1 and 2 containing AHA after 2 weeks. Therefore, the compositions of Examples 1 to 2 according to the present invention was confirmed to be superior to the exfoliation power than the composition of the comparative example.

By taking the constitution as described herein, the face-wash cosmetic composition according to the present invention achieves an effect that is hypoallergenic and excellent exfoliation power, and also has a wash off type and tissue off type Since both types can be used, it is expected to be preferably used for the purpose of exhibiting this effect.

Claims (3)

1 to 20% by weight of higher alcohol having 10 to 22 carbon atoms; 1 to 20% wax; Polyhydric alcohol 2 to 20% by weight; Face wash containing 2 to 20% by weight of natural surfactant selected from methylglucose sesquistearate, polyglycerol methylglucose distearate, sucrose stearate, sucrose laurate and polyglyceryl-4-isostearate and a balance of purified water Cosmetic composition. The composition of claim 1 wherein the wax is at least one selected from canova wax, candelilla wax, beeswax, lanolin, paraffin, ceresin and microcrystal wax. The composition according to claim 1, wherein the polyhydric alcohol is at least one selected from glycerin, 1,3-butylene glycol, propylene glycol, sorbitol and maltitol.