Simple 10% Niacinamide Booster Serum is formulated with 10% Niacinamide (Vitamin B3), 1% Vitamin B5, and 1.5% Glycerin to help hydrate and soften the skin while improving the appearance of uneven skin tone, texture, and visible pores. This lightweight serum promotes a smoother, more even-looking complexion and leaves skin feeling hydrated from the first use.