Reducing agent for straightening curly hair and process for...

Details Reducing agent for straightening curly hair and process for... Reducing agent for straightening curly hair and process for...

2005-04-01

2009-12-22

Richter, Johann R (Department: 1616)

Drug, bio-affecting and body treating compositions

Live hair or scalp treating compositions

Permanent waving or straightening

Reexamination Certificate

active

07635465

ABSTRACT:
The present invention aims to provide a reducing agent for straightening curly hair that can deal with various kinds of hair damage and various degrees of curling and a process for straightening curly hair, which does not cause breaking and insufficient straightening of curly hair. Specifically, the present invention relates to reducing agent for straightening curly hair comprising (A) ammonium thioglycolate and/or monoethanol amine thioglycolate, (B) at least one cysteine selected from the group consisting of L-cysteine, DL-cysteine, N-acetyl-L-cysteine, L-cysteine monohydrochloride and DL-cysteine monohydrochloride, (C) monoethanol amine and (D) ammonium hydrogen carbonate and/or ammonia; wherein the weight ratio of (C)/(D) is 1 to 15.

REFERENCES:
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patent: 5641809 (1997-06-01), Hagen et al.
patent: 6125856 (2000-10-01), Yamashita
patent: 6517822 (2003-02-01), Buck
patent: 2002-363041 (2002-12-01), None
patent: 2003113050 (2003-04-01), None
Takahashi et al., Composition for providing permanent wavy hair appearance to hair, contains agent containing polychlorinated dimethyl methylene piperidinium and agent containing polyoxyethylene alkyl ether phosphoric acid, Derwent Abstract, Apr. 18, 2003, pp. 1-6.
Zviak, Charles, “The Science of Hair Care;”Marcel Dekker, Inc., pp. 207-209. (1986).

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