Our whitening teeth patch contains sucrose and glycerin. It helps to remove tooth stains and whiten teeth. Its usage is very simple: first take out the teeth whitening sticker, apply the teeth whitening sticker below, and then apply the teeth whitening sticker above. Leave teeth whitening patches on the teeth for 30 minutes. Do not eat or drink water during use. Tear off the teeth whitening sticker and throw it away. Rinse the remaining gel and enjoy the bright smile. Oxidation stains and brightening teeth after use.