First of all, don’t get it wet. The Apple Watch is not waterproof. If you sweat, that is okay. If you wear a lot of sunscreen, you may want to try and keep it away from the watch. That also goes for lotion. Here’s the rest of the list: • Detergent • Soap • Any type of water (pool water, soapy water, washer water) • Acidic foods (oranges and other citrus) • Acids • Oil • Hair dye • Cleaning solutions • Insect repellant • Perfume • Adhesive remover (like Goo Gone) You also want to keep credit cards and key cards away from it for the fact that they are magnetic and it is the watch that could damage the magnetic strips, rendering credit cards and magnetic strips useless. If any of the above items come in contact with the Apple Watch, you can do the following: • Turn the Apple Watch off. • Remove the band by pressing and releasing the buttons that hold it on • Use a non-abrasive lint-free cloth to wipe the watch down. If you need to, you can lightly dampen the cloth with clean water • Dry the watch with a lint-free, non-abrasive cloth Never use cleaning materials. The Apple Watch Sport can handle these things better, but it is good to always be cautious.