penetration |
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| navigate by keyword : absorbing anatomy body burn cancer carcinogen carcinoma care collagen cream damage dermis diagram elastin epidermis excessive fibers health healthy human hypodermis layer light lotion medical medicine melanin melanoma penetrate penetration process protect protection radiation rays reflected skin structure summer sun sunblock sunburn sunscreen suntan tan tanning ultraviolet uva uvb vector |
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| Uv penetration into the layers of the human skin. UVB rays do not penetrate the skin deep as they blocked by the epidermis. UVA penetrate deep into the skin, thus damaging elastin and collagen fibers |
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