Discover the new Garnier Fast Bright 30X* Vitamin C Serum, our most concentrated brightening formula with the highest ever concentrated* Vitamin C & Lemon. This fast-absorbing essence is dermatologically tested to work on visibly reducing dark spots & marks by 43%.  On first use, skin is smoother, brighter and more radiant**. With regular use, skin looks visibly brighter and in 3 days, spots look visibly reduced**. Garnier Fast Bright Booster Serum also includes: 1% Vitamin C as an antioxidant, also known as Ascorbic Acid, Vitamin C has antioxidant properties and is scientifically proven to fight dark spots; 2% Niacinamide as a shield, also known as Vitamin B3, this powerful active is praised for its anti-inflammatory benefits, and is known to reduce the appearance of pores, while hydrating skin; Yuzu & lemon for spotless skin, lemon juice is a common remedy well known for brightening skin quickly and treating dark spots, as the citric acid it contains has natural brightening components. *Vs Fast Bright day cream. **Clinical test results on 50 Asian women.