Apply 2-3 drops to clean, dry skin once or twice daily, gently massaging in circular motions to let the serum absorb. Salicylic Acid deeply exfoliates and unclogs pores, helping to reduce acne, blackheads, and excess oil. In the morning, always follow with sunscreen. At night, follow with a moisturizer for soothing hydration. Make it your daily step for clearer, smoother skin.