Revox B77 Help Anti Dark Spot Serum is an active formula for skin with dark spots caused by post-inflammatory hyperpigmentation, sun damage or hormonal variations. The high-performance antioxidant complex of Vitamin C and Ferulic Acid protects the skin from free radicals and evens the complexion for a clear and radiant appearance. Formulated with Azelaic Acid, the product helps fade dark spots and pigmented acne scars over time, as well as prevent their reappearance. This lightweight serum absorbs instantly without leaving a sticky film. How to use Step 1 - All over the face: apply 3-4 drops at night to clean, dry skin. Step 2 - Spread evenly from the center of the face outwards, avoiding the eye area. Step 3 - Use the rest on the neck. Apply SPF in the morning. As a spot treatment: apply as needed only to affected areas.