Paula's Choice CLINICAL Niacinamide 20% Treatment dramatically reduces the look of pores. This highly concentrated serum features 20% Niacinamide with Acetyl Glucosamine and Purslane to diminish enlarged pores, tough bumps, and orange-peel texture. It improves blotchy tone, fades post-blemish marks, and reinforces skin elasticity, offering benefits for all skin types.