These disposable pumice bars are really easy to use. Just wet the bar and gently rub it on the area you want to smooth, like your feet or elbows. Be careful not to rub too hard as it might irritate your skin. After use, keep them in a dry place. If they get wet and start to break down, it's time to replace them with a new bar. Enjoy using these colorful pumice bars to keep your skin soft and smooth.