Profile: Bleach Pro Whitening Products offers a variety of whitening kits, complete with whitening gel syringe dispensers, dental impression trays, retainer storage cases, and detailed instructions. Other available accessories include whitening pens, LED activation lights, and professional dental office lights. Whitening gels are formulated with active ingredient carbamide peroxide in 16%, 22%, or 35% concentrations. Carbamide peroxide is the most widely used tooth whitener in the dental care profession.