CLEANSING FOAM COSMETIC COMPOSITION COMPRISING AMINO ACID-BASED SURFACTANTS

Abstract

Provided is a cleansing foam cosmetic composition comprising amino acid-based surfactants, and more particularly to a cleansing foam cosmetic composition in which a nonionic or amphiprotic surfactant is not used, and which comprises amino acid-based surfactants consisting of only sodium lauroyl glutamate, sodium cocoyl glycinate, and potassium cocoyl glycinate.

Claims

1. A cleansing foam cosmetic composition, comprising amino acid-based surfactants consisting of: (A) sodium lauroyl glutamate; (B) sodium cocoyl glycinate; and (C) potassium cocoyl glycinate.

2. The composition of claim 1, wherein 7 to 25 wt % of said (A) sodium lauroyl glutamate, 7 to 25 wt % of said (B) sodium cocoyl glycinate, and 1 to 5 wt % of said (C) potassium cocoyl glycinate with respect to a total weight of the cleansing foam cosmetic composition are included.

3. The composition of claim 2, wherein a weight ratio of (A) sodium lauroyl glutamate, (B) sodium cocoyl glycinate, and (C) potassium cocoyl glycinate is selected within the range of 7:7:1 to 13:13:1.4.

4. The composition of claim 3, wherein the weight ratio of (A) sodium lauroyl glutamate, (B) sodium cocoyl glycinate, and (C) potassium cocoyl glycinate is 10:10:1.4.

5. The composition of claim 1, further comprising water, an antioxidant, and a moisturizing agent.

6. The composition of claim 5, wherein the moisturizing agent is any one or more selected from the group consisting of glycerin, diglycerin, 1,3-butylene glycol, ethylene glycol, propylene glycol, dipropylene glycol, sorbitol, maltitol, 1,2-pentanediol, and 1,2-hexanediol.

7. The composition of claim 1, wherein the composition is a cream state or a paste state.

8. The composition of claim 2, wherein the composition is a cream state or a paste state.

9. The composition of claim 3, wherein the composition is a cream state or a paste state.

10. The composition of claim 4, wherein the composition is a cream state or a paste state.

11. The composition of claim 5, wherein the composition is a cream state or a paste state.

12. The composition of claim 6, wherein the composition is a cream state or a paste state.

13. A method of producing the cleansing foam cosmetic composition according to claim 1.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG. 1 represents pictures for comparing cleansing abilities shown in the cases in which three kinds of amino acid-based surfactants are used independently, and in a mixed state.

[0028] FIG. 2 represents pictures resulting from observing respective foam generation levels of the surfactants according to each time.

[0029] FIG. 3 represents pictures resulting from observing foam maintenance levels according to each time after discharging each of the surfactant.

DETAILED DESCRIPTION OF THE INVENTION

[0030] It should be apparent that the present invention may be embodied in various forms, various modifications can be made, and the present invention is described on the basis of specific exemplary embodiments. However, the present invention should not be construed as being limited to the specifically disclosed exemplary embodiments, but should be understood as comprising all modifications, equivalents or alternations included in the idea and technical scope of the present invention.

[0031] Furthermore, the terms used in the present specification are only used for describing the specific exemplary embodiments, and are not intended for limiting the present invention. It should be understood that all the terms used herein including technical or scientific terms have the same meanings as those which are generally understood by those having ordinary skill in the art field to which the present invention pertains, unless they are defined differently.

[0032] The inventors of the present invention made studies and efforts in order to get over the problems of the conventional arts, and as a result thereof, in the case of cleansing foam produced by mixing of only specific kinds of amino acid-based surfactants, it was found that the cleansing foam is low irritant to the skin, is friendly environmental, and also has excellent properties with respect to cleansing ability, foaming ability, and foam maintenance ability, and so on.

[0033] As the ingredients of amino acid-based anionic surfactants penetrate into between the scalp, which is a surface targeted for cleansing, and the hair, the adhesive power of wastes becomes weakened so that cleansing can easily be performed by physical power. The appropriate cleansing property and foaming ability of these anionic surfactants act as important elements for removing wastes from the scalp and the hair.

[0034] In general, although the amino acid-based surfactants have widely been known as representative surfactants for producing a hypoallergenic cleansing agent, and have also been known as having good biodegradability, it is problematic in that the cleansing agent does not foam well, slipperiness and stickiness often remain even after cleaning, and the cost of production rises.

[0035] The amino acid-based surfactants preferable to be used in the cleansing foam cosmetic composition according to the present invention may appropriately be selected and used according to each purpose, and for example, surfactants based on amino acids of being acidic, such as N-acyl glutamates, and surfactants based on amino acids of alkalescency verging on neutrality shown in acyl glycinates can all be used.

[0036] In particular, it is preferable to select sodium lauroyl glutamate, sodium cocoyl glycinate, and potassium cocoyl glycinate which are obtainable from natural raw materials.

[0037] The sodium lauroyl glutamate is obtainable from coconut oil or palm oil, and so on, and is an anionic surfactant ingredient originating from glutamic (amino acid), lauricacid, and natrium. It is a vegetable ingredient which may substitute for a synthetic surfactant and is characteristic in that biodegradability is excellent. Furthermore, because the sodium lauroyl glutamate acts as an active material so as to be mixed well by being absorbed into surfaces of each materials, it helps to stabilize constituent ingredients which are not mixed in a cosmetic. In particular, it can widely be utilized as a cleansing ingredient showing the same weak acidity as pH of the skin, and can provide an excellent feeling of use because it causes cleansing to be finished by a soft feeling of touch.

[0038] The sodium cocoyl glycinate and the potassium cocoyl glycinate are anionic surfactants based on a vegetable amino acid extracted from coconut fruit having a pH value of 8 to 9, have biodegradability as ingredients originating from nature, are not almost give stimulation to the skin, and are safe. Because foam generation ability is excellent, they can cause cleansing to be softly performed, and they can also cause soft foam, and provide high cleansing ability and a moisture use sensation.

[0039] Accordingly, when the three ingredients are appropriately mixed, high skin stability can be realized, a feeling of use can also be improved, and a mild cleansing foam cosmetic composition having an excellent cleansing or foam effect more than ever can be realized.

[0040] According to a preferable embodiment of the present invention, each of the amino acid-based anionic surfactants has a content which ranges from 15 to 30 wt % with respect to a whole composition. Preferably, the content may be used in the range of 20 to 25 wt %. When the respective contents of the amino acid-based anionic surfactants are less than 15 wt %, it is problematic in that the elasticity of foam lacks, or ability of relieving stimulation to the skin decreases, and when their respective contents are more than 30 wt %, it is problematic in that a feeling of use is not good because hardness becomes higher.

[0041] 7 to 25 wt % of (A) sodium lauroyl glutamate, 7 to 25 wt % of (B) sodium cocoyl glycinate, and 1 to 5 wt % of (C) potassium cocoyl glycinate with respect to a total weight of the cleansing foam cosmetic composition are included. It is the most preferable that a weight ratio (A:B:C) of the amino acid-based surfactants is 10:10:1.4. If necessary, the weight ratio of the ingredients may also be selected within the range of 7:7:1 to 13:13:1.4.

[0042] In the cleansing foam cosmetic composition according to the present invention, in addition to the aforesaid essential ingredients, ingredients used in general cosmetics, such as remaining purified water, an antioxidant, a cosmetic preparation, a moisturizing agent, a ultraviolet ray absorbent, a perfume, and so on may be mixed within the scope which does not influence the effects of the present invention.

[0043] According to the present invention, polyvalent alcohol is included as a moisturizing agent for providing a moisture feeling after cleansing. For example, the polyvalent alcohol may be any one or more selected from the group consisting of glycerin, diglycerin, 1,3-butylene glycol, ethylene glycol, propylene glycol, Dipropylene glycol, sorbitol, maltitol, 1,2-pentanediol, and 1,2-hexanediol, but is not limited thereto.

[0044] A method of manufacturing the cleansing foam cosmetic composition according to the present invention is not specially limited, and a produced formulation shows a cream state or a paste state.

[0045] Hereinafter, the present invention is described in more detail on the basis of preferable examples.

EXAMPLES. INVESTIGATION ON PROPERTIES RESULTING FROM MIXING OF THE SURFACTANTS FOR PRODUCING THE CLEANSING FOAM COSMETIC COMPOSITION

[0046] Table 1 below shows each content ratio applied to the cases in which three kinds of amino acid-based surfactants are used independently, and in a mixed state. Cleaning ability, foaming ability, and foam maintenance ability aimed at each of Samples 1 to 6 were examined.

TABLE-US-00001 TABLE 1 Samples in which three kinds of amino acid-based surfactants are used independently, and in a mixed state Sample Nos. 1 2 3 4 5 6 D.I WATER TO 100 TO 100 TO 100 TO 100 TO 100 TO 100 (A) SODIUM 21.4 — —  1.4 10 10 LAUROYL GLUTAMATE (B) SODIUM — 21.4 — 10 10  1.4 COCOYL GLYCINATE (C) — — 21.4 10  1.4 10 POTASSIUM COCOYL GLYCINATE

Experimental Example 1. Valuation on Cleansing Ability

[0047] The inside parts of the forearm of a human body were uniformly coated with the ingredients of waterproof mascara, waterproof eyebrow, and lipstick that are in deep colors and have high staying power in the representative size of 5 cm wide×1 cm deep, and were neglected for ten minutes, and then tests for cleansing ability were carried out with the six sample surfactants (21.4% sol). The inside parts of the forearm were scrubbed while circles were drawn around them thirty times under the pressure applied as much as the amount of about 10 ml, were then washed with lukewarm water and were dehydrated.

[0048] As a result thereof, as can be seen from FIG. 1, although the ingredient of the waterproof mascara wasn't almost completely erased, the respective ingredients of the waterproof eyebrow and the lipstick showed higher cleansing abilities when the mixed surfactants (Samples 4, 5 and 6) were used than when the surfactants were used independently (Samples 1, 2, and 3). In particular, the result of Sample 5 showed the most excellent washing ability.

Experimental Example 2. Valuation on Foaming Ability

[0049] Concerning each of Samples 1 to 6 of the surfactants, 1% sol was put into a 100 vial vessel in the amount of 20 g, and was agitated and stirred up and down ten times, and then their respective foam generation levels were observed according to each time. As can be seen from FIG. 2, foaming abilities shown in Samples 4 and 5 were observed to be excellent.

Experimental Example 3. Valuation on Foam Maintenance Ability

[0050] Concerning each of Samples 1 to 6 of the surfactants, 1% sol was put into an auto-foam vessel in the amount of 20 g, was discharged identically three times, and then was observed according to each time. As can be seen from FIG. 3, foam was mostly maintained even after one hour, and particularly Samples 3 and 5 were observed as showing excellent foam maintenance ability.

Experimental Example 4. Test for Formulation

[0051] In order to look about whether a formulation is embodied or not according to each ratio of the surfactants, eight samples were prepared, and were compared with one another. In Examples 1 to 6 and Comparative Example 1 prepared on the basis of the results of the experimental examples, the surfactants of (A) sodium lauroyl glutamate, (B) sodium cocoyl glycinate, and (C) potassium cocoyl glycinate were mixed while being varied at fixed ratios.

[0052] In particular, in the case that a total amount of the three kinds of surfactants was in the range of 15 to 30 wt %, hardness was formed, and particularly when the total amount was in the range of 20 to 25 wt %, the most preferable hardness value could be obtained.

[0053] Although the potassium cocoyl glycinate among the surfactants was required to be maintained at the ratio of 1.4% or more, when its content became high relatively compared to those of the other two kinds of surfactants (corresponding to Comparative Example 1), it was problematic in the light of difficulty in its commercialization because viscosity of the surfactant deviated from the optimum range, and thus it was difficult to use the surfactant in a tube container.

[0054] Meanwhile, concerning Comparative Example 2 in which other ionic surfactants (sodium lauryl sulfate and cocamidopropyl betaine) in addition to the amino acid-based surfactants were additionally included and prepared, because hardness was too low, it was impossible to measure the hardness, and as a result of being confirmed through the measurement of viscosity instead of the hardness, it was measured that the viscosity was measured to be low (6,000 at 4*30 rpm, LV series viscometer).

[0055] That is, in the present invention, it could be confirmed that additionally mixing the surfactants having different properties acted as cutting desired effects in half rather than compensating for the disadvantages.

[0056] Here, a desired hardness of the formulation according to the present invention ranges from 50 to 300 N, preferably 50 to 100 N. The most preferable hardness ranges from 85 to 95 N.

TABLE-US-00002 TABLE 2 Com- Com- Example Example Example Example Example Example parative parative INCI 1 2 3 4 5 6 Example 1 Example 2 WATER 61.64 54.8 56.2 50.2 46.2 36.2 66.2 56.2 HYDRO- 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 XYACETOPHENONE GLYCERIN 20 20 20 20 20 20 20 20 HYDROXYPROPYL 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 STARCH PHOSPHATE (A) SODIUM 7 10 10 13 15 20 5 6.95 LAUROYL GLUTAMATE (B) SODIUM 7 10 10 13 15 20 5 6.95 COCOYL GLYCINATE (C) POTASSIUM 1.96 2.8 1.4 1.4 1.4 1.4 1.4 0.84 COCOYL GLYCINATE SODIUM LAURYL — — — — — — — 3.66 SULFATE COCAMLDOPROPYL — — — — — — — 3 BETALNE 1,2-HEXANEDIOL 1 1 1 1 1 1 1 1 ETHYLHEXYLGLY 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 CERIN DECYLENE 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 GLYCOL RESULT hardness hardness hardness hardness hardness excess seperation impossible of 15 of 35 of 91 of of 250 of to measure 110 harness

Experimental Example 5. Valuation on Skin Stimulation Property

[0057] Experiments aimed at fifteen panels for comparing skin stimulation properties shown after using the compositions of Example 3 and Comparative Example 2 were carried out. In the experiments for stimulation to the skin, after the back of the hand was coated with each composition, it was left for five minutes, and was cleansed and finished in water, and then in comparison of the feelings of stimulation which panels felt, each item concerning the properties of an itch, red spots, hives, tingle was marked out of 0 to 5 (the more the mark is high, the more stimulation properties are high), and the results thereof were then shown in Table 3 below.

[0058] Although skin stimulation indices of the two compositions weren't all high on the whole, it could be found that stimulation levels (particularly, the itch) shown in Example 3 in which only the amino acid-based surfactants were used were lots lower than those shown in Comparative Example 2 in which the ionic surfactants were additionally used.

TABLE-US-00003 TABLE 3 Panel Stimulation Red Nos. to the skin Itch spot Hives Tingle 1 Example 3 0 0 0 0 Comparative 1 0 0 1 Example 2 2 Example 3 0 0 0 0 Comparative 1 0 0 1 Example 2 3 Example 3 0 0 0 0 Comparative 2 0 0 0 Example 2 4 Example 3 0 0 0 0 Comparative 2 0 0 1 Example 2 5 Example 3 0 0 0 0 Comparative 0 0 0 0 Example 2 6 Example 3 0 0 0 0 Comparative 1 0 0 1 Example 2 7 Example 3 1 0 0 1 Comparative 3 0 0 3 Example 2 8 Example 3 0 0 0 0 Comparative 1 0 0 2 Example 2 9 Example 3 0 0 0 0 Comparative 0 0 0 0 Example 2 10 Example 3 2 0 0 1 Comparative 3 0 0 1 Example 2 11 Example 3 1 0 0 1 Comparative 1 0 0 1 Example 2 12 Example 3 0 0 0 0 Comparative 0 0 0 0 Example 2 13 Example 3 0 0 0 0 Comparative 2 0 0 1 Example 2 14 Example 3 0 0 0 0 Comparative 0 0 0 0 Example 2 15 Example 3 0 0 0 0 Comparative 1 0 0 1 Example 2 (Unit: wt %)