UVB and UVA rays from the sun can be damaging to the skin – if the proper sun protection isn’t worn during sun exposure, this contributes to aging, can cause skin damage…and even skin cancer. When used as directed, sunscreen is proven to: Decrease your risk of skin cancer and skin pre-cancers. Regular daily use of SPF 15 (or higher) can reduce your risk of developing squamous cell carcinoma by about 40% and lower your melonoma risk by 50%; and Help prevent premature skin aging, caused by the sun, including wrinkles, sagging and age spots. Source: https://www.skincancer.org/skin-cancer-prevention/sun-protection/sunscreen/