You can apply Natural Teeth Whitening Powder to the surface of the teeth to create an absorbing and whitening effect. Our Teeth Whitening product has coconut activated charcoal with a strong absorption capacity. In addition, our Teeth Whitening Powder can be applied to all kinds of external discoloration, such as smoke stains caused by bad habits, tea stains, coffee, cola, colored food, yellow teeth and black teeth. Please follow the correct usage procedures to get the maximum benefit from the Teeth Whitening Powder. You need to brush your teeth directly for 3-5 minutes with the toothbrush dipping activated with carbon powder. Then you need to rinse your mouth. Most importantly, please do not put this Teeth Whitening Powder where children can touch it. OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.