When you want the best in at-home whitening, you need Crest 3D Professional Effects Whitening Strips. The Professional Effects Whitening Strips use the same enamel-safe whitening ingredient that's in-use in dentists office, but you'll see the dramatic results just 3 days after using the strips. These strips are designed to remove up to 14 years of tough stains! Crest 3D Professional Effects Whitening Strips are for when you want whitening that will get you professional results quickly without the cost of dental visits. They stay put thanks to the Advanced Seal™ Technology so you'll be able to go about your day while you're whitening. You can talk, drink water, whatever! If you have a big day coming up or just want a little more sparkle every day, these strips will deliver the kind of results you'll want to show off. Trust these strips, as they were developed backed by trusted research and are easy to use. Crest 3D Professional Effects Whitening Strips will give you the confidence to smile bigger and brighter every day!