Get a free sample of Crest 3D Whitestrips from Walmart. Wait for the page to load, then look for the blue tab that says “Sample Whitestrips” at the top. You can expect to receive your sample within 4 weeks.
Find out what other free Walmart samples you can request. If you have problems viewing the free sample page, try downloading Adobe Flash Player for free to view and be able to click on the blue “free sample” button.