Process for the permanent reshaping of keratinous material

Details Process for the permanent reshaping of keratinous material Process for the permanent reshaping of keratinous material

1995-04-11

1996-11-05

Mancene, Gene

Toilet

Methods

Hair treatment by application of specific chemical composition

132202, 132203, 132204, 132206, A45D 704

Patent

active

055707084

ABSTRACT:
A novel treatment process for keratinous material, in particular the hair, for the purpose of obtaining a permanent reshaping of the hair, in particular in the form of permanent-waved hair, the process being characterized in that it contains the following steps: (i) applying a reducing composition to the keratinous material to be treated, which composition contains a thiol chosen from (a) cysteine, (b) cysteamine, (c) thioglycolic acid, (d) thiolactic acid, (e) 3-mercaptopropionic acid, (f) the salts of any of (a)-(e), and (g) the esters of the acids (a) and (c)-(e); a means (rollers) for placing the keratinous material under mechanical tension being used before, during or after the application of the reducing composition; optionally, the treated keratinous material is then subjected to a thermal treatment (heating); (ii) the keratinous material thus treated is then rinsed; (iii) the keratinous material thus rinsed is then left to stand; (iv) a so-called "acidic composition" is applied to the keratinous material, this composition containing at least one carboxylic acid; (v) the keratinous material thus treated is left to stand; and (vi) the keratinous material thus treated is rinsed again, the keratinous material being separated from the means for placing under tension used in step (i) either before or after application in step (iv) of the acidic composition, or before or after the rinsing of step (vi).

REFERENCES:
patent: 2990832 (1961-07-01), McDonough et al.
patent: 3533417 (1970-10-01), Bartoszewicz
patent: 3860446 (1974-01-01), Rushforth et al.
patent: 4066392 (1978-01-01), Abel et al.
patent: 4793993 (1988-12-01), Siuta-Mangano
patent: 4795629 (1989-01-01), Siuta-Mangano
patent: 4982750 (1991-01-01), Kaitz
patent: 5225191 (1993-07-01), de Labbey
Derwent Abstract of FR-A-2486395.

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