Roushun Vitamin C Serum 20% Vitamin C Hyaluronic Acid Professional Anti-aging Brightening Serum 1.01 FL.OZ.(30ml). With our new improved formula, Roushun Vitamin C Serum is thin and highly effective. It will help fade sun spots & discolouration, refine skin texture, reduce wrinkle formation, and minimize existing wrinkles.it also has a highly concentrated base of pure vegan hyaluronic acid to plump skin cells and protects and restore them.