KERATIN FIBER DYEING COMPOSITIONS CONTAINING PYRAZOLO- (1,5-A) -PYRIMIDINE DERIVATIVES, DYEING PROCESS, NOVEL PYRAZOLO- (1,5-A) -PYRIMIDINE DERIVATIVES AND PROCESS FOR PREPARING THE SAME

摘要

The invention discloses novel compositions for oxidation dyeing of keratin fibres comprising at least one particular pyrazolo-[1,5-a]-pyrimidine derivative, the dyeing method using this composition, novel pyrazolo-[1,5-a]-pyrimidine derivatives and their method of preparation.