Tinuvin P in a spandex tape as a cause of clothing dermatitis.

We report a 54-year-old female with allergic contact dermatitis from 2-(2-hydroxy-5-methylphenyl)benzotriazole (Tinuvin P) in a spandex tape sewn into underwear. Tinuvin P is used as an ultraviolet light absorber for stabilizing plastics and the other organic materials against discoloration and deterioration. It is effective in protecting synthetic and natural fibers, polyesters, chlorinated polyesters, polystyrene, polyvinyls, cellulose acetate, ethyl cellulose, acrylates, dyes, waxes, detergents, cosmetic formulations, etc. Our patient developed itchy erythema on her shoulders, chest and upper back after wearing underwear for 1 night. She showed positive reactions to spandex tape sewn into the underwear. She also reacted to 2-(2-hydroxy-5-methylphenyl)benzotriazole (Tinuvin P), which was contained in the spandex. No cross-reaction to other benzotriazoles was seen.