Pore Refining Niacinamide SerumWhat it does: Minimises pores, fades dark spots and regulates oil all in one step. Niacinamide (Vitamin B3) is the overachiever your routine has been missing. Clinically proven to reduce the appearance of enlarged pores, fade post acne dark marks, control excess oil and brighten uneven skin tone without irritation or peeling. Suitable for all skin types. The serum dermatologists wish more people knew about.