This invention is directed to bis alkanols and salts thereof and to compositions of the developer coupler type for the dyeing of hair, consisting essentially of {TAIL ~ bis alkanols} or salts thereof as coupling components and, as {HEAD ~ developer components}, the conventional components used in oxidation dyes 
This invention is directed to bis alkanols and salts thereof and to compositions of the developer coupler type for the dyeing of hair , consisting essentially of { TAIL ~ bis alkanols } or salts thereof as coupling components and , as { HEAD ~ developer components } , the conventional components used in oxidation dyes
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