Combining salicylic acid and tranexamic acid helps to control acne and lighten dark spots.While salicylic acid helps to reduce excess oil and redness in acne,it also soothes and hydrates the face. It is a potent anti-acne serum because it effectively controls oil production.Tranexamic acid can help reduce the appearance of post breakout signs of any color,and it appears to be most effective on deeper skin tones. It also visibly reduces redness. Tranexamic acid deals with both dark spots and mask-like discolorations by allowing the skin's surface layers to return to their normal, even tone.