Brightening, protecting, and restoring youthfulness, The Ordinary Vitamin C Suspension 23% + HA Spheres 2% harnesses the power of vitamin C, a powerful antioxidant to shield your skin against the ageing effects of environmental stresses and free radicals. Formulated with a potent concentration of 23% L-Ascorbic Acid, this stabilised vitamin C serum delivers transformative skin brightening results, the addition of dehydrated hyaluronic acid spheres delivering intense hydration to ensure your skin stays soft, supple and youthful-looking.  Note: The slightly granular texture of this product is due to the vitamin C powder being suspended in an oil-like base and therefore each application requires a few seconds to feel absorbed by the skin. If desired, this formula can be diluted in a cream base per application to allow the skin to build tolerance over time. Note: A very strong tingling but non-irritating sensation is expected during the first 1-2 weeks of use until the skin's tolerance to