This technology allows sunscreens to protect against both UVB and UVA rays in a 3:1 ratio. That is, for example, a product with an SPF of 15 must provide 15 UVB protection and 5 UVA protection. UVA rays are present throughout the day: they tan, cause dark spots, and age the skin. UVB rays are present from 12:00 PM to 4:00 PM and are the ones that cause sunburn and skin cancer. Facial formulas also contain antioxidants that are activated by the sun. Water and sweat resistant. Oil-free and non-acnegenic.
Sun Protection Factor:
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