Hair DyesHairHair PreparationsPhenylenediaminesBeauty CultureHair FollicleBarberingHair Cells, AuditoryGloves, ProtectiveDermatitis, OccupationalNeopreneMaineFluorescent DyesHair ColorHair DiseasesHair Cells, Auditory, InnerHand DermatosesTattooingEstheticsHair RemovalColoring AgentsArylamine N-AcetyltransferaseHair Cells, VestibularVermontHair Cells, Auditory, OuterCosmeticsEpidemiologic FactorsNew Hampshire