Vitamin C + Niacinamide antioxidant booster powder. This product is designed to transform your favorite daily moisturizer, serum or liquid color cosmetic foundation into a state-of-the-art anti-aging treatment. Supercharge your daily regimen and treat your skin to a brighter, more even and youthful appearance. Use with any brand and any time of day. Best added to formulations that remain on the skin rather than wash-off products.