Environment
Researchers Discover How The Sun Damages Our Skin
Ultraviolet radiation - which the human eye can't perceive - is broken down into four categories depending on wavelength and photon energy. Previous studies have documented how each type of UV radiation penetrates to different depths into the skin and that prolonged exposure can lead to skin cancer, but exactly how it damages human skin in other ways has received less attention. Researchers from the cosmetics industry have debated for years whether UVA is worse than UVB for causing photodamage, which leads to the early onset of wrinkles and increased tissue fragility.
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