Clinically proven to decrease the intensity of pigmented areas by 75% in only 3 months, iS Clinical Brightening Serum ( is the key to unlocking even, brighter skin. This lightweight serum inhibits the darkening of spots, provides controlled exfoliation and gently resurfaces the skin without causing inflammation. A highly active blend of Norwegian sea kelp extracts and powerful botanical acids lighten as well as deliver anti-aging benefits, smoothing out fine lines and wrinkles.