Bleaching and dyeing; fluid treatment and chemical modification – Dyeing involving animal-derived natural fiber material ,... – Hair dyeing
Patent
1996-02-26
1999-04-06
Liott, Caroline D.
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
058912002
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 is a cosmetically acceptable anion, are combined neutral, with semipermanent direct dyes in hair dyeing compositions.
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Lim Mu'Ill
Pan Yuo-Guo
Stasaitis Linas
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