Have you noticed that your forehead is the spot of your most frequent breakouts? What you regularly put on your head—whether that’s a bike helmet or a baseball cap— might be bad for your face, warns Jaliman. Turns out your topper can harbor bacteria, transferring it right onto your face if you aren’t keeping things clean. Now, don’t sacrifice safety or style so skin stays clear. Just wipe down the inside of your helmet with rubbing alcohol after each use or toss the cap in the washing machine once a week to banish bacteria and keep your forehead clear.