Wella Aktiengesellschaft

Annelie Doehling

Dirk Lauscher

Otto Goettel

Wolfram Geibel

Helga Kreher

The object of the present application is a dye carrier composition containing oxidative and/or non-oxidative dyes as well as

Colorant with nacreous luster for keratin fibers

A new oxidizing agent composition for mixing with oxidation dye pre-cursor compounds, such as developer and coupler substances, to form a ready-to-use dye mixture for dyeing keratin fibers is described. The oxidizing agent composition contains from 0.01 to 25 percent by weight of at least one alkaline earth peroxide, based on the ready-to-use dye mixture, and from 0.01 to 25 percent by weight of at least one inorganic or organic acid, salt of the at least one organic or inorganic acid or mixture of the salt and/or the at least one acid, based on the ready-to-use dye mixture.

Dyeing hair with compositions which contain oxidation dye precursor

The new bis-pyrazole aza compounds have the formula (I): ##STR1## wherein R.sub.1, R.sub.1 ', R.sub.2, R.sub.2 ', R.sub.3 and R.sub.3 ' are the same or different, and are each, independently of each other, H, a straight, branched or cyclic alkyl group having 1 to 6 carbon atoms, a straight chain or branched monohydroxyalkyl group or polyhydroxyalkyl group with 1 to 6 carbon atoms, a straight or branched alkoxyalkyl group with 2 to 6 carbon atoms, a straight or branched monoaminoalkyl group or polyaminoalkyl group with 2 to 6 carbon atoms, or an unsubstituted aromatic or heteroaromatic ring, or a substituted aromatic or heteroaromatic ring having one or more halogen, a C.sub.1 - to C.sub.4 -alkyl group, a nitro group, a sulfonic acid group, a carboxylic acid group or a C.sub.1 - to C.sub.4 -alkoxy substituent, or an unsubstituted benzyl group, or a benzyl group substituted with one or more halogen atom, a hydroxy group, a C.sub.1 - to C.sub.4 - alkyl group, a nitro group or a C.sub.1 - to C.sub.4 -alkyoxy group, or R.sub.1 together with R.sub.2 and/or R.sub.1 ' together with R.sub.2 ' represent a C.sub.3 -diradical bridge. Hair dye compositions containing these new dye compounds and methods of making them are also disclosed.

Growing community of inventors

Muenster, Germany

Annelie Doehling