Its ultra-fine powder contains the power of vitamin C, which is activated when dissolved in water. After creating a lather and gently working it into the skin, simply leave the product on the skin for 1 minute to allow the pure vitamin C to penetrate the skin. It washes off to leave the skin noticeably brighter. It does not leave the skin feeling dry or tight, and its gentle formula can be used every day, allowing the products in your daily skin care routine to sink in more easily. In order to maintain the effects of the pure vitamin C, it comes in UV-protective, single use packages. For all skin types. 0. 5g×28 packets.