title: Comedogenicity of sunscreens. Experimental observations in rabbits.
abstract: Fourteen of 29 proprietary sunscreen formulations, including suntan promoters, were found to be comedogenic when applied to the external ear canal of albino rabbits. Ultraviolet exposures enhanced the comedogenic effect. The vehicles, rather than the UV-absorbing compounds, seemed to be responsible. accordingly, sunscreen acne may be a subtype of acne cosmetica. A sampling of UV absorbers showed these agents to be noncomedogenic.
mesh_terms: D000152:Acne Vulgaris / Q000139:chemically induced*; D000818:Animals; D004431:Ear, External / Q000187:drug effects; D011817:Rabbits; D013473:Sunscreening Agents / Q000009:adverse effects* / Q000494:pharmacology; D014466:Ultraviolet Rays / Q000009:adverse effects
chemical_list: D013473:Sunscreening Agents