Facts about Sunscreen

SPF_derma_blog_july09.JPG I was walking in the store today and picked up a bottle of SPF 100 sunscreen. Only ten years ago I remember when SPF 15 was all the protection anyone needed. It seems that times are changing, but what does SPF 100 really protect us any better than a lower grade SPF? SPF (sun protection factor) ratings are meant to show how well the sunscreen will protect you from the UVB rays of the sun. If you wear a sunscreen with SPF 2, you will be doubling the time it takes for your skin to burn. An SPF of 15 extends the time for skin damage by 15. According to the Times Herald-Record, the following describes the relationship between SPF and sun protection: ? Sunscreen with an SPF of 2 screens 50 % of UVB rays. ? Sunscreen with an SPF of 15 screens 93 % of UVB rays. ? Sunscreen with an SPF of 30 screens 97 % of UVB rays. ? Sunscreen with an SPF of 50 blocks 98 % of UVB rays. ? Sunscreen with an SPF of 100+ blocks 99 % of UVB rays. It is very important to re-apply sunscreen often in order to maximize your coverage. Unprotected skin will burn, and may lead to skin cancer later in life. Although dermatologists recommend different minimum SPF ratings, it is important to wear a at least SPF 15 everyday to protect from daily sun exposure.
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