Peroxide of the formulawherein R1is selected from linear and branched alkyl groups with 1-4 carbon atoms, and R2, R3, and R4are selected from hydrogen and linear and branched alkyl groups with 1-4 carbon atoms, for use as a medicament, in particular for the treatment of acne.本發明係關於下式之過氧化物,其中R1係選自具有1-4個碳原子之直鏈及支鏈烷基,且R2、R3及R4係選自氫及具有1-4個碳原子之直鏈及支鏈烷基,其用作藥劑,尤其用於治療痤瘡。