Crest 3D White White Stripes Deluxe Professional Effect 20 Bags of 40 Strips Free Worldwide Shipping by Registered Airmail 1 Box = 20 Bags = 40 Strips, 40 Strips: 20 Treatments (1 Top 1 Bottom per Treatment) About Product Visibly Whiter Teeth , 10 days for full effect Apply once a day for 30 minutes. Use the same enamel safe tooth whitener as your dentist. 2 Teeth Whitening Power on the Whitener. Products made in China, from delivery to arrival, usually take around 14-21 days to arrive. 1 pack = 1 pair3 easy steps to a beautiful, white smile:1. *It is best not to brush your teeth immediately before using the bars. *Open the foil bag and remove the product handle strip with dry hands/ *Peel Crest 3D White Whitestrips from the backing. * For best results, use the lower strip first.2. *Using a mirror, apply the gel side of the strip to the front teeth. *Align with gum line and press lightly for good contact. * Fold the rest of the strip behind the teeth to keep it in place.3. Wear Crest 3D White Whitestrips for 30 minutes, remove and discard.attention:1. Do not brush your teeth before brushing. Brush your teeth or rinse your mouth after removing the strip.2. Do not eat, smoke or drink immediately after the sticker is applied.3.Crest 3D Whitestrips will only whiten natural teeth. The strip will not whiten caps, crowns, veneers, fillings or dentures etc. If you have dental work or medication stains, ask your dentist to determine if whitening is appropriate.4. Do not use while wearing the stand.5. Use up to 2 sets of Crest 3D White LUXE Whitestrips per year.6. The product has no box