Nail tools
At-home manis and pedis keep your hands and feet summer-ready, but the tools you use could be harboring a dirty secret. It's normal for bacteria to live on your skin, so when you use a cuticle clipper or pumice stone, you're transferring those bacteria to the tools. Skip cleaning them properly and the bacteria can grow and potentially lead to skin infections, notes Dr. Weiser.
Stay safe: Wash pumice stones with soap and water every time you use it and get a new one every three to four weeks. As for nail and cuticle clippers, clean those with soap and water after using, too. More importantly, don't share. "Normal flora differ from person to person, so bacteria harmless to you could cause infection in your friend, sibling, or partner," she says.