Crest 3D Whitestrips will produce noticeable whitening after **3 days**, and full results can be expected in **20 days** of use. You can use whitening strips up to twice every day. You’ll start seeing results after **2-3 days**, even if the full whitening isn’t complete until after the treatment is finished. It’s OK if you miss a day—the impact on your results will be small as long as you’re wearing the strips consistently afterwards.

Here are the step-by-step instructions for using Crest 3D Whitestrips :
1. Peel: For best results, do not brush teeth immediately before applying strips. Open foil pouch and remove slip.
2. Apply: Align strips with gum line and press gently for good contact. Fold the rest of strip behind teeth to keep in place.
3. Reveal: Wear strips for the recommended time, remove and discard. If you notice gel on your teeth, brush, rinse, or wipe it away.
4. Enjoy: Your teeth are now noticeably whiter!