PROBLEM TO BE SOLVED: To provide an acne treatment agent having a high effect on the treatment of acne without inducing stinging by high concentration vitamin C or its derivative.SOLUTION: The acne treatment agent includes vitamin C or its derivative and the extract of "sanshichi ninjin", a kind of carrot, and by using the extract of "sanshichi ninjin" which has an effect of enhancing glutathione reductase activity together with vitamin C or its derivative, the acne treatment effect is synergistically enhanced without inducing stinging.