Neutrogena Hydro Boost Niacinamide Serum improves uneven skin tone and dull complexion. It is formulated with 10 niacinamide, a form of vitamin B3, and hyaluronic acid. Niacinamide is known to improve the look of skin tone while hyaluronic acid is an essential hydrator found naturally in skin. This face serum improves uneven tone and dull complexion. To use, apply a pearl-sized amount of facial serum twice a day to cleansed face and neck, avoiding contact with eyes. Allow the serum to fully absorb into skin and follow with moisturizer as needed. This facial serum is easy to use and a great addition to any daily skin care routine. Neutrogena Hydro Boost Niacinamide Serum targets uneven tone, dullness, dark marks and oily skin. The niacinamide serum is from a dermatologist-recommended brand. The face serum is not tested on animals, fragrance-free, paraben-free, phthalate-free, and dye-free. Leave your skin feeling hydrated with Neutrogena Hydro Boost Niacinamide Serum. This product comes in a 29-millilitre bottle of fragrance free niacinamide facial serum.The niacinamide serum is from a dermatologist-recommended brand. The face serum is not tested on animals, fragrance-free, paraben-free, phthalate-free, and dye-free. This facial serum is easy to use and a great addition to any skin care routine. Apply a pearl-sized amount twice a day to cleansed face and neck, avoiding contact with eyes. Allow serum to fully absorb into skin and follow with moisturizer as needed. This serum is formulated with 10 niacinamide and hyaluronic acid. Niacinamide is a form of vitamin B3 known to improve the look of skin tone. Hyaluronic acid is an essential hydrator found naturally in skin. This face serum improves dull complexions and uneven tone. Neutrogena Hydro Boost Niacinamide Serum targetsUneven Tone, Dullness, Dark Marks, Oily Skin. Leave your skin feeling hydrated with Neutrogena Hydro Boost Niacinamide Serum. This facial serum improves uneven tone and dull complexion. This product comes in a 29-millilitre bottle of fragrance free niacinamide serum.