The Ordinary Vitamin C Suspension 30% in Silicone 30 - Ml helps visibly brighten skin and reduce signs of ageing such as discolouration, fine lines and dark circles. The pure form of L-Ascorbic acid acts as an effective antioxidant when applied topically. This waterless formula is composed of 30% pure L-Ascorbic acid and very light silicones, creating a smooth feeling on skin. The formula may cause a strong (but non-irritating) sensation during the first 1-2 weeks of use; however, this can be minimized by mixing it with other creams and serums. Apply at night for smoother, brighter and more even skin when you wake up.