Want to brighten your skin and defy signs of ageing (we're talking discoloration, fine lines, and dark circles) overnight? You need The Ordinary‰ Vitamin C Suspension 30% in Silicone. In its pure form of L-Ascorbic acid, vitamin C is an effective antioxidant that has been shown to visibly brighten skin and reduce signs of ageing when applied topically. Directions: Apply a small amount to face in the AM or the PM (PM preferred). A tingling sensation can be expected after application. If this sensation is too strong, this formula can be diluted on each application with your favourite serum or cream.