Yuh-Guo Pan

Hair dyeing with N-(4-aminophenyl) prolineamide, couplers, and oxidizing agents

Hair dyeing compositions containing 2-chloro- and 2,6-dichloro-4-aminophenol and phenylpyrazolones

Anthraquinone hair dyes having a quaternary ammonium side chain

BIS-(2-4-diaminophenoxy) benzenes and their use as coupling components in oxidative hair coloring compositions and methods

Substituted p-aminophenol, process of preparation and use in dyeing hair

Primary intermediate for use in oxidative hair dyeing

N1-trifluoroalkyl substituted 2-nitro-p-phenylenediamine dyes

Hair dye compositions containing 3-substituted-4-aminophenols and 2-substituted-1-naphthols

Primary intermediate in oxidative hair dyeing

Synthesis of 1-acetoxy-2-methylnaphthalene