Wella Aktiengesellschaft

Heiko Walther

Wolfgang Hanefeld

Beate Dannecker

Guenther Lang

Guenter Lang

G&uuml;nther Lang

Method and agents for permanently styling hair, with a base consisting of N,N-disubstituted mercaptoacetamides

The aqueous ready-to-apply composition for permanent waving of hair has a pH of 4 to 8.5 and from 3 to 28% by weight of at least one N-alkylmercaptoacetamide of formula (I):

Agent and method for permanent shaping of hair and method for the production of N-alkylmercaptoacetamides

The composition for permanent shaping of hair contains, as keratin-reducing agent, a compound of the formula (I): ##STR1## or a salt thereof, wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represent, independently of each other, H, a straight or branched chain alkyl or hydroxy alkyl group, with 1 to 3 carbon atoms or a carboxyl group, with the proviso that at least one of the R.sub.1, R.sub.2, R.sub.3 and R.sub.4 groups is not H, n and m are whole numbers from 1 to 3 and X is a bivalent group --O--, --CR.sub.5 R.sub.6 -- or --NR.sub.7 --, in which R.sub.5, R.sub.6 and R.sub.7 are each, independently of each other, H or straight chain or branched chain alkyl groups or hydroxyalkyl groups with 1 to 3 carbon atoms or carboxyl groups. New mercaptoacetamide compounds and methods of making them are also described. The composition for permanent shaping provides a safe and uniform shaping of hair without allergic and sensitizing reactions; it has a skin and hair safe pH range of 6.5 to 9.5.

Saturated, alkyl-substituted n-mercaptoacetyl heterocyclic compounds and

Agent and method for permanently shaping the hair, based on

Agent and process for permanent hair wave based on mercaptoacetamides

The aqueous permanent shaping composition has a pH of 6.5 to 9.5 and contains water, from 3 to 28 percent by weight of one or more mercaptoethylamines of the formula I

Hair shaping compositions containing mercaptoethylamines and methods for

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Marburg/Lahn, Germany

Heiko Walther