HAIR-TREATMENT COMPOSITION AND HAIR-TREATMENT METHOD USING SAME

• US 20120100091A1
• Filed: 06/10/2010
• Published: 04/26/2012
• Est. Priority Date: 06/12/2009
• Status: Active Grant

• Current Assignee: HOYU Company Limited
• Original Assignee: HOYU Company Limited
• Inventors: Hata, Masakatsu, Arai, Akihiko
• Granted Patent: US 8,288,329 B2
• Time in Patent Office: Days
• US Class Current: 424/70.19
• CPC Class Codes: A61K 2800/596 Mixtures of surface active compounds
• CPC Class Codes: A61K 8/44 Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
• CPC Class Codes: A61K 8/442 substituted by amido group(s)
• CPC Class Codes: A61Q 5/02 Preparations for cleaning the hair
• CPC Class Codes: A61Q 5/12 Preparations containing hair conditioners

Abstract

Provided is a hair-treatment composition containing: a first amphoteric surfactant having a structure represented by general formula (1) below; at least one type of second amphoteric surfactant selected from the group consisting of fatty acid amide propyldimethylaminoacetic acid betaines, alkyldimethylaminoacetic acid betaines, N-acylaminoethyl-N-2-hydroxyethylaminocarboxylic acid salts and N-acylaminoethyl-N-carboxymethoxyethylaminocarboxylic acid salts fatty acid amide propyldimethylaminoacetic acid betaines, alkyldimethylaminoacetic acid betaines; and an acidic amino acid. In general formula (1), R¹ represents an alkyl group the carbon number of which is 6 to 20; R² represents a methyl group, an ethyl group, or a hydroxyethyl group; R³ represents a methyl group, an ethyl group, or a —CH₂COOH group; and n is an integer from 1 to 3.

Claims

1. A hair-treatment composition comprising:

(A) a first amphoteric surfactant having a structure represented by the following general formula (1)

2. The hair-treatment composition according to claim 1, wherein the acidic amino acid is of at least one type selected from the group consisting of L-glutamic acid, L-aspartic acid, and taurine.

3. The hair-treatment composition according to claim 1, wherein the second amphoteric surfactant is of at least one type selected from the group consisting of cocamidopropyl betaine, lauryldimethylaminoacetic acid betaine, sodium cocoamphoacetate, sodium cocoamphopropionate, sodium cocoamphodiacetate, and sodium cocoamphodipropionate.

4. The hair-treatment composition according to claim 1, wherein the composition is adapted for use in a post-treatment for hair dyed with an oxidative hair dye.

5. A hair-treatment method comprising applying the hair-treatment composition according to claim 1 to hair in a wet state immediately after the hair is dyed with an oxidative hair dye.

6. The hair-treatment method according to claim 5, further comprising, following application of the hair-treatment composition to hair:

washing and drying the hair; and

applying the same hair-treatment composition again to the washed and dried hair.