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You will want to look for a sun cream that is designed for swimming - don't bother looking for specific ingredients, look for the bottles that say they are for sun and swim. Usually in addition to...
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#1: Attribution notice removed
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System
·
2020-05-27T11:08:46Z (over 4 years ago)
Source: https://outdoors.stackexchange.com/a/8177 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/