MarketplaceColgate White StripsPosted on January 29, 2010. Is Colgate White Strips work ..? Because I want to try. get Crest Whitestrips Premium Ummm, I have not tried the white stripes, but I tried Colgate Crest white and they work very well when used as directed, hope this helps;) Yeah, they are legitimate. The active ingredient is hydrogen peroxide. They need help, even if, by not smoking. vary little. I stick to brushing works faster and better! CommentsThere are no comments.Leave a Comment | Popular My Friends |