Oxidation hair dye composition and method of dyeing hair using same

A composition for oxidative dyeing of keratin fibers, said composition having a pH of from 6 to 9.5 and containing a combination of developer substance and coupler substance, an oxygen-oxido-reductase/substrate system and a peroxidase;

• wherein the coupler substance comprises at least one substituted m-phenylenediamine selected from the group consisting of
• 4-(2'-hydroxyethyl)-1,3-diaminobenzene dihydrochloride,
• 4-propyl-1,3-diaminobenzene dihydrochloride,
• 4-(2',2',2'-trifluoroethoxy)-1,3-diaminobenzene,
• 4-(2'-hydroxyethoxy)-1,3-diaminobenzene dihydrochloride,
• 2-amino-4-methoxyethylaminoanisole,
• 2-amino-4-hydroxypropylaminoanisole dihydrochloride,
• 2-amino-4-(2',2',2'-trifluoroethyl)aminoanisole,
• 4-amino-2-ethylaminoanisole dihydrochloride,
• 4-amino-2-(2',2',2'-trifluoroethyl)aminoanisole and
• 2-amino-4-(2'-hydroxyethyl)aminoanisole sulfate.

A method for the oxidative dyeing of hair, said method comprising the steps of:

• a) providing a hair dye composition having a pH of from 6 to 9.5 and containing a combination of developer substance and coupler substance, an oxygen-oxidoreductase/substrate system and a peroxidase;
• wherein the coupler substance comprises a substituted m-phenylenediamine of formula I, ##STR4## wherein R.sup.1 is selected from the group consisting of alkoxy groups having from one to six carbon atoms, unsubstituted alkyl groups having from one to six carbon atoms and substituted alkyl groups having from one to six carbon atoms and at least one substituent, wherein said at least one substituent is a hydroxy group, a halogen atom or a C.sub.1 - to C.sub.6 -alkoxy group, R.sup.2, R.sup.3 represent, independently of each other, hydrogen, another unsubstituted alkyl group having from one to six carbon atoms or another substituted alkyl group having from one to six carbon atoms and one or more hydroxy group, halogen atom or C.sub.1 - to C.sub.6 -alkoxy group substituents and S represents a hydrogen atom or a further alkyl group having from one to six carbon atoms, or a physiologically compatible salt of the m-phenylenediamine of the formula (I);
• b) applying from 60 to 200 g of the hair dye composition provided in step a) to the hair;
• c) allowing the hair dye composition applied to the hair in step b) to act on the hair for 15 to 60 minutes at 15.degree. to 50.degree. C.;
• and
• d) rinsing the hair with water and drying the hair.