Sunscreens work in two ways: either by blocking harmful UV rays from reaching the skin, or by converting the rays into heat that can be released from the body.
How does sunscreen work? : Read more
How does sunscreen work? : Read more
How does sunscreen work?
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Please do not promote sunscreens of any kind. Here are some facts you should know about sunscreens and sunburns:
First, in the U.S. sun exposure has decreased by 90% since 1935. During that same period, melanoma has increased by 3,000%. The same thing has happened in Europe. Obviously, sun deprivation, not sun overexposure, is associated with melanoma. Secondly, a recent meta-analysis of the association of sunscreen to skin cancer showed that sunscreens made no difference at all in the risk of skin cancer. Another showed that those who used sunscreens actually had several times the risk of sunburn as those who covered up or sought shade when they had enough sun. We need plenty of non-burning sunlight exposure for optimal human health.
For more information: sunlightinstitute.org. In addition, read the book, Embrace the Sun
First, in the U.S. sun exposure has decreased by 90% since 1935. During that same period, melanoma has increased by 3,000%. The same thing has happened in Europe. Obviously, sun deprivation, not sun overexposure, is associated with melanoma. Secondly, a recent meta-analysis of the association of sunscreen to skin cancer showed that sunscreens made no difference at all in the risk of skin cancer. Another showed that those who used sunscreens actually had several times the risk of sunburn as those who covered up or sought shade when they had enough sun. We need plenty of non-burning sunlight exposure for optimal human health.
For more information: sunlightinstitute.org. In addition, read the book, Embrace the Sun
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