C Refiner Vitamin C Serum with SPF 50 is a two-in-one daily 20% vitamin C serum with sheer zinc sunscreen that immediately brightens and protects skin from harmful UV rays and environmental stressors while reducing and preventing dark spots, fine lines, and wrinkles. Benefits 20% vitamin C (L-ascorbic acid) serum with mineral zinc sunscreen SPF 50 UVA/B and blue light protection Reduces and prevents signs of aging Brightens and evens skin tone Patented, stable formula does not oxidize Suitable for all skin tones Formula dries invisible with no white cast Results: 100% showed significant improvement in lines and wrinkles immediately and after 4 weeks use 100% showed significant improvement in skin softness immediately and after 4 weeks use 91% showed significant improvement in skin density (collagen production) after 4 weeks Consumer test showed 93% of users agree that upon application the product leaves skin radiant, smooth, even and flawless looking Consumer test showed 92% of users saw improvement in skin's softness and smoothness Consumer test showed 87% agree skin tone looks more firm and even Consumer tested on all skin types and skin tones | BeautyStat Universal C Skin Refiner 20% Vitamin C Brightening Serum Travel Size, 0. 33 oz | Dermstore