Best for oily/combination skin. This clarifying serum contains exfoliating Lactic Acid, purifying Salicylic Acid, illuminating Azelaic Acid, and Vitamin B3. Sulphur and Tomato Fruit Extracts nourish and clarify while astringent Organic Lemon Alcohol refreshes and encourages moisturizing equilibrium. Client Use: AM and PM. Apply 2 to 3 drops of serum to face and décolleté following thorough cleansing of the skin. Allow to absorb.