THINKBABY and THINKSPORT sunscreen is rated SPF 50+. The American Academy of Dermatology recommends children over 6 months and adults use a sunscreen with SPF of 30 or higher. Some chemical sunscreens advertise SPF ratings as high as 100, however, the FDA revisited the system and set the upper limit to SPF 50 for 2012. The rating system as it stands causes more misperceptions than it solves. In short, sunscreens with very high SPF ratings do not provide better protection than a SPF 30 in relative terms. It's important to note that the current SPF rating system does not rate UVA; it only rates UVB. Dermatologists recommend using a broad-spectrum sunscreen that protects against both UVA and UVB exposure. UVB is what commonly is associated with causing sunburn and free radical generation. Where UVA has been linked to skin damage and even more serious potential for free radical generation.
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