| 摘要 |
Hair dyeing processes and compositions containing alpha -cyano-methanesulfonamido-nitrobenzene compounds having the formula YNH-SO2-CH2-CN where Y represents hydrogen, chlorine, bromine or an alkoxy having 1 to 4 carbon atoms and Z represents NH2 or OH, and wherein the processes of dyeing hair use these compounds directly or in combination with couplers for oxidation dyeing.
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