Crest Whitening Strips - Professional Effects

The package contains 20 pouches for 20 days treatment in a sealed box. Each pouch contains 2 strips – one for upper and one for lower teeth. Level 20: Result lasts 12 months and beyond Use once a day for just 30 minutes No dental impressions required Professional level of teeth whitening treatment Advanced Seal Technology’s No Slip Grip makes it possible to talk and drink water while wearing the strips How to use: 1) Peel away the whitening strips from the backing liner. 2) Stretch and then apply the strips for 30 minutes to upper and lower teeth, then remove gently. Ingredients: PVP, PEG-8, Water, Hydrogen Peroxide, Acrylates Copolymer, Sodium Hydroxide, Sodium Saccharin