uv penetration into the layers of the skin. infographic of sunscreen protection against uva, uvb rays. skin anatomy. broad-

absorbing anatomy body broadspectrum burn cancer care cream damage dermis drawn epidermis graphic hand health healthy human illustration infographic layer light lotion medical medicine melanoma penetrate protect protection radiation ray rays reflect reflected reflection skin spf structure summer sun sunblock sunburn sunlight sunscreen suntan tan tanning ultraviolet uva uvb vector