Provide beauty services such as shampooing, cutting, coloring, and styling hair, and massaging and treating scalp. May also apply make-up, dress wigs, perform hair removal, and provide nail and skin care services. [SOC] Aromatics amines, used in hair dyes until 1980, were bladder carcinogens. [PMID 20447989] Causes of allergic contact dermatitis include nickel, rubber chemicals, p-phenylene diamine, glycerol thioglycolate, and Kathon CG. Ammonium persulfate is a cause of contact urticaria in hairdressers. See the process, "Dressing Hair."