Crest Whitestrips Myths Debunked: What You Should Know Crest Whitestrips are thin, flexible strips coated with a safe peroxide-based gel. They are designed to conform to the shape of your teeth and gently whiten them over time by removing surface stains and deeper discoloration. Read more:- https://thewhitesmilesuk.hashnode.dev/crest-whitestrips-myths-debunked-what-you-should-know