Vitamin C Serum Oz Natural 30ml Face serum from Oz Natural, restores the healthy glow to your skin as it works to treat skin pigmentation, stimulate the skin to produce more collagen, and improve its texture to make it more elastic and plump. It comes with a unique formula of vitamin C and E in addition to a blend of hyaluronic acid. An ideal choice for soft, fresh, and renewed skin. About the product: Contains a 20% concentration of vitamin C suitable for mature skin, except sensitive skin. How to use: Clean and prepare the skin. Then apply a thin, even layer of serum on the skin or the targeted area. Let it dry. You can then apply moisturizer afterward. For better results: apply twice daily. What is the difference between the green and orange vitamin C? The green vitamin C from Oz Natural contains a high percentage of hyaluronic acid and a low percentage of vitamin C, suitable for use at any time, whether morning or night, and its main function is to hydrate the skin. As for the orange vitamin C from Oz Natural, the main ingredient is 20% vitamin C, so it comes in a dark-colored bottle because it is exposed to oxidation. Its main function is to fight wrinkles and enhance skin radiance, and it should be used at night and away from light.