10% VITAMIN C SERUM: This serum is the perfect facecare product to deliver glowing brighter skin in 5 days when consistently used. GLOWING BRIGHTER SKIN IN 5 DAYS: Clinically tested: 10% Vitamin C and 5% Niacinamide delivers glowing brighter skin in 5 days. REDUCES DARK SPOTS IN 3 DAYS: Powerful combination of 10% Vitamin C and 5% Niacinamide helps reduces Dark Spots in 3 Days. EVENS SKIN TONE: A perfect beginner-friendly serum this 10% Vitamin C serum fades discolourations to even skin tone. STABLE FORM OF VITAMIN C: The naturally occurring form of vitamin C is highly unstable so there is a skincare hero which is a derivative of Vitamin C known as 3-O-Ethyl ascorbic acid.