Would sunscreen prevent the absorption of Vitamin D? Should lighter-skinned individuals not use such a high SPF for vitamin D absorption and then switch to a higher SPF after a specified time? If this is in fact an issue with absorption, then should darker complected individuals use sunscreen if only in the sun for a half-hour? Or would their exposure need to be more extensive before applying sunscreen? With all that said, would darker complected individuals still receive DNA damage from the UVA rays? Or are these rays reflected because of their darker skin?
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