What It Is:Universal C Skin Refiner with Spf 50 is a two-in-one daily 20% vitamin C serum with sheer zinc sunscreen.What It Does:Immediately brightens and protects skin from harmful Uv rays and environmental stressors while reducing and preventing dark spots, fine lines and wrinkles.Free Of...- Fragrance, parabens, phthalates- Animal crueltyHow To Use It:- Apply two to three pumps of Universal C Skin Refiner Broad Spectrum Spf 50 as the serum or treatment step in your skincare routine. Smooth over cleansed, dry skin in the Am. Follow with Universal Pro Bio Moisture Boost Cream. Note that adding a moisturizer over Universal C Skin Refiner Broad Spectrum Spf 50 will not dilute the Spf effect.- For best results, also use Universal C Skin Refiner at night followed by Universal Pro Bio Moisture Boost Cream.- If this is the only Spf in your skincare routine, make sure to apply generously and evenly and allow it to absorb well before continuing with the rest of your routine.- You may experience a tingling sensation when using the skin refiner, which usually dissipates after a few minutes. If the feeling is uncomfortable, cut back usage to once a day and follow with Universal Pro Bio Moisture Boost Cream.Clinical 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.