OneSkin sells a mineral-based line of sunscreen that uses a combination of zinc oxide and the company's patented OS-01 peptide to protect skin from the potential damage that UV light can induce. While I'm not a big fan of sunscreens in general, OS-01 SHIELD is likely your best choice if you plan to expose your skin to the sun for longer than it can handle (when you don't have the option of using a physical barrier, like clothing). You can watch my video review of One Skin's sunscreen on YouTube.