Hydro Boost + Niacinamide Serum is a silky hydrating serum with no added fragrance. The formula combines 10% niacinamide, acetyl glucosamine, and sodium hyaluronate to improve skin tone and texture. The serum glides easily over the face and absorbs to a non-greasy soft finish. The serum instantly hydrates and plumps the skin while brightening it over time.