During our recent Turks and Caicos vacation - in which K and I spent basically all our daylight hours relaxing on the beach, with several dips in the ocean throughout - I tested out three different mineral body sunscreens. In trying to research "reef safe" and mineral sunscreens before our trip, I found myself quite overwhelmed because there were so many brands out there, many of them smaller or less well-known than what's typically available at many US drug stores. So I figured I might as well review the ones I tried, in case that information could possibly help anyone else!
Please note that my reviews here are subjective and not particularly scientific. I'm basically going off my personal observations from using each of these sunscreens for the equivalent of around two full beach days each, ~10:30 AM to 6:30 PM, switching between them as I ran out of one or the other. (Many mineral sunscreens aren't available in super-large packages like the drugstore brands.)
Each day, I reapplied sunscreen roughly once every 2 hours, or a bit sooner if I thought more sunscreen than expected had washed off during one of my quick ocean swims. So I was generally applying around 4 times a day, and maybe a fifth time on my shoulders and arms, spots that felt like they got more sun exposure. Additionally, I wore a straw sun hat - albeit one that'd gotten a bit floppy and squished from somewhat careless packing - and also tried my best to stay as covered as I could under a beach umbrella whenever I wasn't in the water. That beach umbrella definitely wasn't perfect protection because of how the angle of the shade changes drastically throughout the day with the sun's movement.
I may not have picked the best or most popular brands of mineral body sunscreen available in the US. I didn't have much time or mental energy for research before our trip because I'd been so busy at the office. Every time I searched Google for the "best" mineral or reef safe sunscreens, I felt like many websites had drastically different lists of recommended brands or products. Plus, I was nervous about buying any fancier, Sephora or department store-priced mineral sunscreens if I didn't have someone I personally know make the product recommendation. Thus, I ended up sticking with things sold at Target, which maybe limits one's options too much in this product category.
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My biggest worry was that, with many mineral sunscreens, one often sees at least one or two extremely negative reviews. Think something like "this sunscreen doesn't work at all, we still got badly burned wearing it" or "it was impossible to blend into my skin" or "this had a really off texture that made it difficult to use." If any of the sunscreens I picked turned out to have issues like that, it would have been a disaster with the kind of high sun exposure beach vacation I was planning. Happily, there weren't any big problems, all the sunscreens I tried were reasonably functional. All three also had no noticeable scent or fragrance.
Though one warning, I generally found these mineral sunscreens were not very waterproof, with sometimes very visible signs that they were washing off, potentially after an extremely brief swim. I think this may be a common issue with many or even most products in this category, compared to many chemical sunscreens?