Whilst you can’t prevent getting older there are some big factors in skin aging that you can prevent. Skin aging is caused by a combination of factors, and one of the biggest is sun damage. So if you want the best skin care, sunscreen is a huge part of that, but only a part. The component of sunlight which damages your skin is ultraviolet radiation. UVA and UVB are both present in sunlight and UVB burns your skin. But blocking UVB radiation only prevents sunburn, and there is more to preventing skin aging from ultraviolet radiation than merely preventing UVB radiation. That’s because UVA, whilst not burning your skin, is primarily responsible for skin aging and the results thereof, such as wrinkles and sagging. And UVA, it is thought, is responsible for the worst skin cancers. The FDA doesn’t require the labels of sunscreens to tell us how much UVA protection is included in the sunscreen and the result was that in the summer of 2008 there were only 29 percent of sunscreens that had some UVA protection. A year later that percentage increased to 70 percent but that still means that 30 percent of sunscreens on the market have no UVA protection. The results can be skin cancer and excessive skin aging. It’s extremely difficult to know how much sun protection you are getting from your sunscreen

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