Light water-based formula with 20% Azelaic Acid Derivative (PAD) that evens out uneven skin tone, normalizes sebum secretion, and soothes sensitized skin. Azelaic acid is a clinically proven 3-in-1 active ingredient that helps reduce acne breakouts, pigmentation, and redness. This formula uses a cutting-edge water-soluble form called Potassium Azeloyl Diglycinate (PAD), which has properties similar to azelaic acid, but with a super-light, oil-free texture. PAD's strength lies in evening out skin tone and controlling excess oil. INSTRUCTIONS FOR USE Apply a few drops to a cleansed face before applying any other serum or moisturizer. It can be used in the morning or at night. INSTRUCTIONS FOR USE Apply a few drops to a cleansed face before applying any other serum or moisturizer. It can be used in the morning or at night.