[The influence of acetylosalicyclic acid on the cutaneous effect of UV-A (author's transl)].

This study deals with the influence of acetylosalicyclic acid (Colfarit Bayer) on the cutaneous effect of UV-A. Each of 24 volunteers received UV-A doses from 5 J/cm2 to 50 J/cm2. The immediate and the delayed UV-A erythema were reduced by prophylactic application of acetylosalicylic acid, 3 g daily three days before exposure and three days afterwards. 72 h after exposure to UV-A the reduction of delayed erythema formation was most obvious. Acetylosalicyclic acid had no influence, however, on the pigmentation caused by UV-A radiation.