Vitamin C is an effective antioxidant and its pure form of L-Ascorbic Acid has been shown to help reverse multiple signs of skin ageing while brightening the skin when applied topically. This water-free formula provides 30% pure L-Ascorbic Acid which remains completely stable due to the absence of water. Due to the presence of very light silicones, this formulation feels smooth on the skin despite the suspension format of the formulation, avoiding the short-lived gritty feeling of our original Vitamin C Suspension 23% + HA Spheres 2% formula. This treatment is ideally applied at bedtime. This product is a water-free suspension of 30% Ascorbic Acid powder. The Ordinary’s portfolio of Vitamin C includes the following formulations: Vitamin C Suspension 23% + HA Spheres 2% Ascorbyl Glucoside Solution 12% Ascorbyl Tetraisopalmitate Solution 20% in Vitamin F Magnesium Ascorbyl Phosphate 10% 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. Ingredients Dimethicone, Ascorbic Acid, Polysilicone-11, PEG-10 Dimethicone.