Our nicotinamide essence is carefully formulated with nicotinamide, acetylglucosamine and glycerin. Specially designed to balance skin oil and reduce acne. The usage method is extremely convenient: 1. Thoroughly clean the skin and dry it; 2. Apply an appropriate amount of this product evenly to the facial skin. 3. Gently massage to promote absorption. And it can keep the skin moist throughout the day, avoiding dryness and peeling.