New study showed that sunscreens, even when used optimally to prevent sunburn, still increase vitamin D levels. Interestingly, "A high UVA‐PF sunscreen enables significantly higher vitamin D synthesis than a low UVA‐PF sunscreen because the former, by default, transmits more UVB than the latter."

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New study showed that sunscreens, even when used optimally to prevent sunburn, still increase vitamin D levels. Interestingly, "A high UVA‐PF sunscreen enables significantly higher vitamin D synthesis than a low UVA‐PF sunscreen because the former, by default, transmits more UVB than the latter."