{TAIL ~ 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 {HEAD ~ bis alkanols} or salts thereof as coupling components and, as developer components, the conventional components used in oxidation dyes 
{ TAIL ~ 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 { HEAD ~ bis alkanols } or salts thereof as coupling components and , as developer components , the conventional components used in oxidation dyes
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