If you want to know the truth, yes, Crest Whitestrips do work. They can make your teeth look whiter because of a gel that is spread along the strip and placed onto the surface of your teeth. This substance contains hydrogen peroxide or carbamide peroxide and works to penetrate the tooth enamel to remove stains https://crestwhitestrips1.blogspot.com/2023/03/blog-post_30.html