Highly concentrated serum that combines the maximum concentration of niacinamide with optimal ratios of synergistic ingredients for total acne control..Suitable for all skin types Targets blackheads, whiteheads, pigmentation, and complexion.Cruelty-free.20ml / .67 fl oz.After cleansing, during the serum phase, apply a few drops to the skin..Use fingertips to gently massage and absorb the serum, starting from the center of the face working towards the edges.