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Now that it's summertime, you may be using sunscreen more frequently. It probably comes as no surprise that some sunscreens are more effective than others. But you may not be aware that your sunscreen might not be protecting you from all types of UV damage- even if it IS preventing you from getting burned. How UV Rays Affect Your SkinThere are two main types of ultraviolet rays: UVB and UVA. UVB rays generally only penetrate the outer layers...

Sunscreen is an important tool for protecting the skin from the sun’s powerful rays. But finding one that is safe and effective can be surprisingly difficult and confusing, partly because there is disagreement about whether or not particular ingredients are safe. So I will try to provide an overview of some of the major concerns related to various sunscreen ingredients.There are two basic types of active ingredients in sunscreens: chemical and ph...