Crest 3D White Professional Effects strips are an at-home teeth whitening system that uses an enamel-safe hydrogen peroxide gel to remove stains and provide professional-level whitening. **GREAT STOCKING STUFFER OR HOLIDAY GIFT IDEA!** Key features include the "No Slip" Advanced Seal Technology for a secure fit, results visible in as few as three days and the ability to remove years of tough stains. The strips are flexible, designed to conform to the shape of your teeth, and allow you to talk and drink water while whitening. Key Features: *Advanced whitening: Removes up to 14 years of tough, set-in stains for a noticeably whiter smile. *No Slip Technology: The Advanced Seal Technology provides a no-slip grip that keeps the strips securely in place, allowing you to talk and drink water while wearing them. *Fast results: You can start to see a whiter smile in as little as three days, with full results in about 20 days. *Enamel-safe: The whitening gel uses the same enamel-safe ingredient that dentists use, making it safe and effective when used as directed. *Easy to use: The strips are thin, flexible, and designed to conform to the shape of your teeth, and the process is simple. Smoke and pet free environment Thank you for looking!