Pigmentation of the palms and scalp probably due to proprietary hair tonics, containing various phenols and phenolic derivatives.
D003358:Cosmetics / Q000009:adverse effects*; D006801:Humans; D008297:Male; D010636:Phenols / Q000009:adverse effects*; D010859:Pigmentation Disorders / Q000139:chemically induced*; D012880:Skin Pigmentation / Q000187:drug effects
D003358:Cosmetics; D010636:Phenols