The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 11, 1997
Filed:
Aug. 06, 1996
Kao Corporation, Tokyo, JP;
Abstract
A curly hair-straightening composition is disclosed, which comprises: (A) from 1 to 20% by weight of one or more keratin-reducing substances selected from the group consisting of thioglycolic acid, thioglycolic acid derivatives, cysteine, N-acylcysteines, salts thereof, thioglyceryl alkyl ethers, mercaptoalkylamides, sulfites and hydrogensulfites; (B) one or more alcohols selected from the group consisting of monohydric alcohols having a straight-chain or branched alkyl group carrying 3 or 4 carbon atoms and dihydric or trihydric alcohols having a straight-chain or branched alkyl group having 4 to 6 carbon atoms; and (C) water; wherein the weight ratio of the component (B) to the component (C) is from 1:3 to 3:1. Further, a method for straightening curly hair by using this composition is also disclosed. The curly hair-straightening composition of the present invention can permanently and sufficiently straighten natural curly hair or frizzy hair without causing any damage on the hair.