The only teeth whitening strips infused with supersmile’s proprietary ingredient Calprox® which whitens and cleans with no sensitivity! These quick dissolving teeth whitening strips whiten your teeth 8 shades in 7 days (on average). Whitens teeth and removes plaque with no residue. Free of silica, parabens, sulfates, and known allergens. Superstrips are dissolvable & should be handled with dry hands. No need to pull or stretch them before applying. Just remove them from the package and press them firmly onto your teeth. Your saliva will start the dissolving process. Fold over any excess around the teeth. Strip dissolves in about 15 minutes. Do not eat or drink while wearing—no need to rinse. Use one strip for the top and another for bottom. Wait 30 minutes after use before drinking and/or eating. Keep out of reach of children.