3 ms·
the body makes vitamin D3 when UVB rays hit cholesterol in the skin sunscreen either blocks, scatters, or absorbs those rays seems to reason that sunscreen sl
by graywh 6y ago
the body makes vitamin D3 when UVB rays hit cholesterol in the skin
sunscreen either blocks, scatters, or absorbs those rays
seems to reason that sunscreen slows down sun burn and vitamin D3 production