Featuring the trending star ingredient, Snail Mucin Complex, this serum is clinically tested to improve skin tone and brightness. It visibly brightens, moisturizes and retexturizes for radiant, glowing skin. Formulated with snail mucin complex and niacinamide, also known as vitamin B3, a powerhouse pairing that helps even skin tone and strengthen the skin barrier to lock in miosure. 3.3 fl. oz.