Professional whitening gel package includes 4 extra large 10ml whitening gel syringes in 35% strength Carbamide Peroxide. * It would take over 13 of the standard 3ml whitening syringes to equal that amount of gel. The LARGE 10ml syringe dispensers are easy to handle and represent an unmatched VALUE in terms of price, quantity and quality. High viscosity gel provides maximum adhesion to tooth surfaces. Whitening gel syringe dispensers are USA Made by Becton Dickinson (NYSE:BDX) a US based company, the whitening gel is a dental industry standard utilized by clinics and offices throughout the USA and internationally. Gel is produced under laboratory conditions and ongoing quality control checks ensure a consistent, professional product. Bleach Pro is a licensed insured supplier of quality whitening kits, gel and accessories since 1999. What is Carbamide Peroxide? Carbamide Peroxide is the primary active ingredient or bleaching agent in the professional whitening gel. It is essentially a variation of Hydrogen Peroxide developed especially for dental whitening. Gel provides the chemical reaction required to safely remove stubborn stains from tobacco, coffee, tea, red wines, foods, yellowing from age and more. The unique formula is pH balanced with high adhesion qualities designed to stay on tooth surface. The at-home procedure is essentially what a professional dentist would prescribe. The difference is the cost. Get the radiant smile you desire without an expensive trip to the dentist. Results are long lasting and your satisfaction is guaranteed. We strive to provide exceptional customer service.