This 35% Watts Power Optimized Formula offers thicker gel to better adhere to teeth. Whiten your teeth in half the time at home with this optimized formula. 5-10 Shades Whiter in less than 20 days, GUARANTEED. 30 minutes or less per application. See the difference after just on application. Quality 35% carbamide peroxide gel used worldwide. Formulated with 100-percent pure formula - no fillers or additives used. Optimized pH formula for higher whitening performance. Kosher USP glycerin (no animal by-products) Includes: 4 HUGE 10-cc syringes filled with 35-percent optimized bleaching gel, 1 FCP Sensitivity - Remineralizing Gel & Complete Instructions...