A sunscreen that blocks UVB, harm marine life [1] and can cause allergic airways inflammation [2] when breathed (inevitable when it dries on your skin) is hardly the best sunscreen in my option.
My personal choice for to vitamin D synthesis is Avobenzone stabilized with ubiquinone.
My personal choice for to vitamin D synthesis is Avobenzone stabilized with ubiquinone.
[1] https://oceanservice.noaa.gov/news/sunscreen-corals.html [2] https://www.sciencedirect.com/science/article/pii/S0041008X1...