Methods for dyeing hair with anthraquinone hair dyes having a qu

Details Methods for dyeing hair with anthraquinone hair dyes having a qu Methods for dyeing hair with anthraquinone hair dyes having a qu

1995-08-07

1996-05-28

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Hair dyeing

8405, 8606, 8657, 8675, A61K 713

Patent

active

055207073

ABSTRACT:
Anthraquinone compounds of formula I ##STR1## wherein R.sub.1 and R.sub.2 are methyl and R.sub.3 is propyl, or R.sub.1 and R.sub.2 are ethyl and R.sub.3 is methyl and A.sup.- is a cosmetically acceptable anion, are useful for the dyeing of hair. Compounds of formula I may advantageously be employed with direct dyes. Compositions and a method of use employing same are disclosed.

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patent: 4168144 (1979-09-01), Curry et al.
patent: 4296044 (1981-10-01), Duchardt et al.
patent: 4393007 (1983-07-01), Priester et al.
patent: 4655970 (1987-04-01), Priester et al.
patent: 4886517 (1989-12-01), Bugaut et al.

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