Reviva Labs' Nourishing Niacinamide Serum is a lightweight, fast-absorbing formula that delivers the appearance of smoother, more radiant skin. Powered by Vitamin B3 (Niacinamide), this multitasking serum helps support the skin's natural moisture barrier, improving tone, texture, and balance. With continued use, skin appears visibly clearer, more even, and refined—making it an ideal addition to any skincare routine. This serum layers easily under makeup in the morning or under moisturizer at night, helping maintain a matte yet luminous look throughout the day.