EELHOE Tooth Whitening Strips 7/14pcs Teeth Whitening Pads Stain Remover Reduce Sensitivity Get Brighter Smile Oral Care Products Features: The following items can help you use dental strips more correctly: 1. Please rinse your mouth before and after each use. Do not use the dental strips immediately after brushing your teeth. 2. Due to the different shapes of the upper and lower dental strips, do not use them upside down. 3. For best results, it is recommended that you whiten your teeth every six months. 4. You can also use dental strips while taking a bath. Tooth Types: 1. Extrinsic tooth discoloration (affected by coffee, tobacco, sauce, tea, food, etc.) 2. Endogenous tooth discoloration (mild fluorosis or tetracycline staining) 3. Hereditary yellow teeth 4. Other causes of tooth discoloration 5. Ideal for anyone seeking a whiter and brighter smile Package Included: 1 * tooth whitening strip pack Note: If you have any questions, please contact the seller. We will do our best to resolve any issues and provide excellent customer service.