Skin AbsorptionTetrachloroethyleneTolueneAtmosphere Exposure ChambersHairAbsorptionBenzeneIntestinal AbsorptionMethanolSolventsHair FollicleSkinSubstance PHair Cells, AuditoryHair ColorHair DiseasesSkin DiseasesHair Cells, Auditory, InnerSkin AgingSkin NeoplasmsHair RemovalHair DyesHair Cells, VestibularHair PreparationsHair Cells, Auditory, OuterSubstance-Related DisordersSkin Physiological PhenomenaSkin TestsBiological AvailabilitySkin PigmentationSpectrophotometry, AtomicAlopeciaJejunum