COMPOSITION FOR CARING FOR KERATIN MATERIALS AND USE THEREOF

Abstract

A composition for caring for keratin materials, comprising a fatty acid-ester mixture of a plurality, e.g., at least 3, 4, or 5, of medium chain fatty acids and a plurality, e.g., at least 3, 4, or 5, of monoesters; and a cosmetically or dermatologically acceptable auxiliary agent to assist the delivery of the fatty acid-ester mixture to the keratin materials.

Claims

1. A composition for caring for keratin materials, comprising: (A) a fatty acid-ester mixture comprising: (A-I). a fatty acid component comprising at least 3 medium chain fatty acids, and (A-II). an ester component comprising at least 3 monoesters of medium chain fatty acids with a polyol; and (B) a cosmetically or dermatologically acceptable auxiliary agent to assist the delivery of the fatty acid-ester mixture (A) to the keratin materials, wherein the medium chain fatty acid denotes a monocarboxylic acid having 6 to 20 carbon atoms.

2. The composition according to claim 1, wherein the medium chain fatty acid has a formula (I):
R—C(O)—OH  (I) wherein: R represents a linear or branched, saturated or unsaturated C.sub.5-C.sub.19, hydrocarbyl group.

3. The composition according to claim 2, wherein R has odd number of carbon atoms.

4. The composition according to claim 2, wherein the monoester (A-II) is of formula (II):
R—C(O)—OR′  (II) wherein: R is as defined in formula (I). R′ represents a residue from a polyol containing from 2 to 10 carbon atoms.

5. The composition according to claim 4, wherein R and R′ are different from one another, in which R represents a linear C.sub.7-C.sub.15 alkyl, and R′ represents a residue from a linear polyol containing from 2 to 6 carbon atoms.

6. The composition according to claim 4, wherein the at least 3 medium chain fatty acids comprised the fatty acid component (A-I) are respectively used as the medium chain fatty acids used to form the at least 3 monoesters comprised the ester component (A-II).

7. The composition according to claim 4, wherein a same polyol is used to form the at least 3 monoesters.

8. The composition according to claim 7, wherein the polyol is glycerol, so as to form at least 3 glycerides with the corresponding at least 3 medium chain fatty acids.

9. The composition according to claim 1, wherein the fatty acid-ester mixture (A) comprises at least 3 fatty acids selected from the group consisting of caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, and arachidic acid, to be used as component (A-I); and the corresponding glycerides of the each fatty acid in component (A-I) are used as component (A-II).

10. The composition according to claim 1, wherein the total amount of fatty acids of component (A-I) and the total amount of monoesters of component (A-11) are present in a ratio ranging from 4:1 to 1:1.

11. The composition according to claim 1, wherein a multiester formed from the same medium chain fatty acids and the same polyol for the ester component (A-II), is comprised in the fatty acid-ester mixture (A).

12. The composition according to claim 4, wherein the fatty acid-ester mixture (A) is activated virgin coco oil comprising: fatty acid component (A-I): caprylic acid in an amount of 5-20 wt %; capric acid in an amount of 1-10 wt %; and lauric acid in an amount of 20-70 wt %; and monoester component (A-II): monocaprylin in an amount of 0.5-15 wt %; monocaprin in an amount of 0.1-10 wt %; and monolaurin in an amount of 10-40 wt %; each relative to the total amount of the fatty acid component (A-I) and the monoester component (A-II).

13. The composition according to claim 12, wherein the activated virgin coco oil comprises: a fatty acid component (A-I) comprising caprylic acid, capric acid, and lauric acid, in an amount of 5-40 wt %; a monoester component (A-II) comprising monocaprylin, monocaprin, and monolaurin, in an amount of 1-30 wt %; diglycerides of caprylic acid, capric acid, and lauric acid, in a sum amount of 10-50 wt %; and triglycerides of caprylic acid, capric acid, and lauric acid, in a sum amount of 10-70 wt %; each relative to the total amount of the activated virgin coco oil.

14. The composition according to claim 1, wherein the auxiliary agent (B) comprises a solvent selected from the group consisting of water and organic solvents, and optionally a cationic surfactant.

15. A method for soothing the itching feeling of keratin materials, comprising applying the fatty acid-ester mixture of claim 1 to the keratin material.

16. A composition for soothing the itching feeling of keratin materials, comprising the fatty acid-ester mixture of claim 1.

Description

EXAMPLES

[0260] The ingredient amounts/concentrations in the compositions/formulas described below were expressed in % by weight, relative to the total weight of each composition/formula.

[0261] Material:

[0262] COCOS NUCIFERA (COCONUT) OIL: activated virgin coconut oil (AVCO), available from BIOTROPICS

[0263] Other materials without specification here were each commercially available.

Example 1

[0264] Compositions A, and comparative compositions A′ and A″, as Table 1 were formulated:

TABLE-US-00001 TABLE 1 Sulfate free shampoo A and comparative A′ and A″ A A′ A″ SODIUM LAUROYL SARCOSINATE 6 6 6 (SP CRODASINIC LS30SNT MBAL-LQ-(RB) from CRODA) SODIUM COCOYL ISETHIONATE 3.4 3.4 3.4 (HOSTAPON SCI 85 C from CLARIANT) COCO-BETAINE 4 4 4 (AMPHITOL 24B-2 from KAO) LAURIC ACID (CREMERAC 0.7 0.7 0.7 C 12/99-LAURIC ACID from PETER CREMER) SALICYLIC ACID 0.2 0.2 0.2 SODIUM BENZOATE 0.5 0.5 0.5 HYDROXYPROPYL GUAR 0.25 0.25 0.25 HYDROXYPROPYLTRI- MONIUM CHLORIDE (JAGUAR C 162 SGI from RHODIA (SOLVAY)) HYDROXYPROPYL GUAR 0.3 0.3 0.3 (JAGUAR HP 105 SGI from RHODIA (SOLVAY)) COCOS NUCIFERA (COCONUT) 0.9 — 0 OIL - activated virgin coconut oil of the invention COCOS NUCIFERA (COCONUT) 0 0 0.9 OIL virgin coconut, oil without activation (AGRIPURE AP-20 from CARGILL) CITRIC ACID 0.2 0.2 0.2 WATER QS to QS to QS to 100 100 100

[0265] The above listed compositions A, A′ and A″ were prepared according to known manufacturing method of field.

[0266] Compositions A and A′ and A″ were obtained in shampoo product according to the present invention.

[0267] Compositions B as Table 2 was formulated:

TABLE-US-00002 TABLE 2 Shampoo B INCI US B WATER QS to 100 SODIUM LAURETH SULFATE 14 (AE2S-70 from LIANSHUI XINYUAN BIOLOGY) COCO-BETAINE 2.6 SALICYLIC ACID 0.2 SODIUM BENZOATE 0.5 GUAR HYDROXYPROPYL- 0.2 TRIMONIUM CHLORIDE (CATCOL C 135 (L) from LUCID COLLOIDS) CARBOMER (ACRYPOL 980 0.4 from COREL PHARMA CHEM) COCOS NUCIFERA 0.9 (COCONUT) OIL OCTYLDODECANOL 0.5 (EUTANOL G from BASF)

[0268] The above listed composition B was prepared according to known manufacturing method of field.

[0269] Composition C as Table 3 was formulated:

TABLE-US-00003 TABLE 3 Lotion for scalp INCI US C WATER QS to 100 BEHENTRIMONIUM CHLORIDE 0.22 QUATERNIUM-87 0.3 POLYSORBATE 20 0.3 STEARYL ALCOHOL 0.2 CHLORHEXIDINE DIGLUCONATE 0.2 POLYQUATERNIUM-37 0.5 COCOS NUCIFERA (COCONUT) OIL 0.3 FRAGRANCE 0.5

[0270] The above listed composition C was prepared according to known manufacturing method of field.

[0271] Composition D as Table 4 was formulated:

TABLE-US-00004 TABLE 4 INCI US D WATER QS to 100 BRASSICAMIDOPROPYL DIMETHYLAMINE 1.5 GLYCERYL STEARATE 0.5 CETEARYL ALCOHOL 7 CETYL ESTERS 1.5 CAPRYLYL GLYCOL 0.3 COCOS NUCIFERA (COCONUT) OIL 0.9 TARTARIC ACID 0.3

[0272] The above listed composition D was prepared according to known manufacturing method of field.

Example 2

[0273] The soothing feeling of the composition A was evaluated. 5 volunteers between age of 25 and 45 applied the composition A on the hair and scalp every day for 3 weeks, followed by 2 weeks without using the Composition A. The anti-itchy feeling (soothing feeling) was assessed in the total 5 weeks. Scores of itchy feeling before the application of the Composition A was given as a baseline, the scores of itchy feeling after application of the Composition A was given every day, the mean difference was shown in the FIG. 1.

[0274] Scores were given and calculated as follows:

[0275] In the first 3 weeks, each volunteer washed hair with the composition A at every evening, in which the conventional usage of each volunteer was used. In the next 2 weeks, each volunteer washed hair with a standard shampoo without AVCO also at every evening, in which the conventional usage of each volunteer was still used.

[0276] Volunteers gave scores to the itching feeling, where:

[0277] 0 meant unchanged;

[0278] −1 meant fairly improved;

[0279] −2 meant significantly improved; and

[0280] −3 meant substantially free of itching feeling.

[0281] The average scores of the 5 volunteers were counted and plotted in FIG. 1.

[0282] Referring to FIG. 1, less the score, less the itchy feeling was. It was observed that the Composition A showed a very good and long term anti-itchy feeling, even 2 weeks after the last application of the Composition A.

Example 3

[0283] The suppleness effect on the hair were evaluated using the composition A and comparative composition A″. Hair swatches were washed using the compositions A and A″ respectively, then dried out. The hair swatches were subsequently tested by instrument HYACINTHE CN from AJ AUTOMATION for bending test. The result was shown in FIG. 2.

[0284] Referring to FIG. 2, it was observed that compared with conventional shampoo without using AVCO, e.g., even having VCO which comprised medium chain fatty acids without esterification thereof, the dry bending performance of composition A was significantly better.