It is also an object of the invention to provide {HEAD ~ agents} for the oxidative dyeing of hair that are based upon {TAIL ~ bis alkanols} as coupling components 
are based upon
It is also an object of the invention to provide { HEAD ~ agents } for the oxidative dyeing of hair that are based upon { TAIL ~ bis alkanols } as coupling components
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH