Human Skin. Of Absorbing And Reflected Uv Rays. Uv Penetration Into The Layers Of The Skin. Uvb Rays Do Not Penetrate The Skin Deep As They Blocked By The Epidermis. Uva Rays Penetrate Deep Into The Skin, Thus Damaging Elastin And Collagen Fibers.

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absorbing anatomy blocked body burn cancer carcinogen carcinoma care collagen cream damage damaging deep dermis diagram elastin epidermis excessive fibres graphic health healthy human hypodermis illustration layer layers light lotion medical medicine melanin melanoma penetrate penetration pigmentation process protect protected protection radiation rays reflected skin structure summer sun sunblock sunburn sunscreen suntan tan tanning thus ultraviolet uva uvb