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