Boost your current skincare regime with our niacinamide booster serum. Add a few pumps into your current Koa Life face oil or moisturizer or on its own to boost your glow. Niacinamide tightens and firms and improves the health of your skin. It fades dark spots, fights blemishes for a clear complexion, protects against sun damage, and minimizes lines. Juicy skin starts here.