Niacinamide Clarity Complex SerumDescription: Niacinamide Serum is the ultimate solution for reducing acne marks and controlling sebum production. Niacinamide also helps to visibly improve large pores and prevent acne. Daily use will result in fewer lesions and improved skin texture. Direction For Use: Use the dropper to put a few drops of serum onto your fingertips. Apply 2 3 drops to your face and neck, and gently massage it in.