P-phenylene diamines and 1,2,4-benzenetriols as hair dye...

Details P-phenylene diamines and 1,2,4-benzenetriols as hair dye... P-phenylene diamines and 1,2,4-benzenetriols as hair dye...

A - Human Necessities

61

K

167/302

A61K 7/13 (1980.01)

Patent

CA 1101335

ABSTRACT OF THE DISCLOSURE An autoxidizable hair dye preparation is disclosed capable of coloring or darkening hair when applied thereto and exposed to the atmosphere comprising a mixture of (I) at least one p-phenylene diamine compound, or an acid addition salt thereof, and (II) at least one 1,2,4- benzenetriol compound, each compound optionally containing nuclearly substituted C1-4 alkyl, alkoxy, hydroxyalkyl or halogen. The preparation is pre- ferably applied and exposed to the atmosphere repeatedly until the desired degree of darkening or color build-up is attained. - 1 -

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