title: [Hair and their environment].
abstract: Hair is influenced by the effects of the daily environment. Some toxic xenobiotics slow down or block the cell renewal of the hair matrix, thus inhibiting hair growth. The ultraviolet light obviously influences the physical structure and physiology of the hair follicle. Tobacco is similarly responsible for negative influences on the evolution of various alopecias. Several cosmetic procedures for maintaining and making hair more attractive are not always harmless, and they occasionally represent a possible origin for alopecia.
authors.forename: C
authors.initials: C
authors.lastname: Piérard-Franchimont
authors.forename: G E
authors.initials: GE
authors.lastname: Piérard
mesh_terms: D000505:Alopecia / Q000209:etiology; D004777:Environment; D006197:Hair / Q000187:drug effects / Q000502:physiology* / Q000528:radiation effects; D018859:Hair Follicle / Q000187:drug effects / Q000502:physiology / Q000528:radiation effects; D006203:Hair Preparations / Q000009:adverse effects; D006801:Humans; D006920:Hygiene; D014029:Tobacco Use Disorder / Q000150:complications; D014466:Ultraviolet Rays; D015262:Xenobiotics / Q000633:toxicity
chemical_list: D006203:Hair Preparations; D015262:Xenobiotics