Garnier Vitamin C Serum for Face, Anti-Dark Spots & Brightening 30ml. 3.5% Vitamin C, Niacinamide, Salicylic Acid & Lemon Extract, Brightening Serum For Dull, Tired Skin. Our Vitamin C Anti-Dark Spot Serum is enriched with a potent mix of 3.5% Vitamin C**, Niacinamide & Salicylic Acid, to visibly reduce the appearance of dark spots and enhance glow. Enriched with Lemon Extract, a powerful superfood well known for its brightening properties, the formula has been carefully blended to provide dark-spot action. Our serum is non-oily, non-sticky & absorbs quickly.