Elta MD UV Clear SPF 46 combines the broad-spectrum sunscreen protection of zinc oxide with the skin care benefits of Niacinamide to calm and protect sensitive, acne-prone, or photo-damaged skin. Niacinamide's effect and management of blemishes such as acne, as well as skin discoloration, has been scientifically proven many times over. Now, EltaMD brings you a very pure form of this powerful topical ingredient in an extremely light sunscreen. Niacinamide's management of acne in study after study suggests it to be highly effective. In one study as many as 82% of people with inflammatory acne showed improvement after using Niacinamide as a topical treatment for eight weeks. Additionally, 60% had significant reductions in papules/pustules and 52% had a reduction in the severity of their acne. As with all our sunscreens, EltaMD UV Clear SPF 46 is sensitivity-free, fragrance-free, paraben-free, and non-comedogenic.