Patent ID: 6090161
Filing Date: 2000-07-18
Classification: A61K,A61Q

Abstract:
An oxidation colorant for keratin fibers comprising:(a) a secondary intermediate;(b) a 5,6-dihydroxyindoline derivative corresponding to formula (I): ##STR3## wherein independently of one another R.sup.1 is hydrogen, a C.sub.1-4 alkyl group or a C.sub.1-4 hydroxyalkyl group,R.sup.2 is hydrogen, a --COOH group, or a --COOH group present as a salt with a physiologically compatible cation,R.sup.3 is hydrogen or a C.sub.1-4 alkyl group,R.sup.4 is hydrogen, a C.sub.1-4 alkyl group: or a group --CO--R.sup.6 where R.sup.6 is a C.sub.1-4 alkyl group, andR.sup.5 is a group as for R.sup.4, or a physiologically compatible salt of said compound of formula (I) with an organic or inorganic acid; and(c) no primary intermediate oxidation dye precursors.