Mario Badescu 's Clarifying Serum with Azelaic Acid reduces the appearance of blemishes while lightening dark areas and pimple marks. The precious formula also impresses with its long-lasting effect, as the serum minimizes the reappearance of pimples, blackheads and the like. The treatment manages to preserve the skin's balance and give it a more beautiful and luminous appearance. The serum can also be used in cases of acne. Application : After cleansing and toning the skin, apply 3-4 drops of serum to the face in the morning or evening, avoiding the eye area. Then apply your usual day or night cream. Remarks : If the product comes into contact with the eyes, rinse them thoroughly with clean water. Do not use on sensitive or damaged skin.