Beesline Unifying Brightening Vitamin C Serum contains 15% pure vitamin C in its most stable and effective form, which is more penetrating than the commonly used L-ascorbic acid with reduced sun sensitivity. Vitamin C is an excellent component for brightening your complexion and creating a more even-toned glow. Vitamin C reduces melanin formation by decreasing the activity of an enzyme called tyrosinase. Furthermore, Vitamin C can counteract free radicals, improve skin look, and combat sun-induced dark spots. 0.15% Hyaluronic acid reduces and prevents dark patches and pigmentation. It acts as a protective barrier to your skin, preventing damage from the sun and other external aggressors such as dust, pollution, and more. Overall, Beesline Unifying Brightening Vitamin C Serum works to reduce dark spots and revitalize the skin. This Supercharged serum with 15% vitamin C, in its safest and most potent forms has the ability to lighten age spots and revitalize the skin. In two weeks, you'll see visible effects.