The fastest and most effective in-office whitening treatment uses G.L.O. (Guided Light Optics) patented technology to activate and accelerate the Hydrogen Peroxide whitening gel for maximum efficacy and reduced chair time. Whitening gel formulated with desensitizing agent. Clinically proven to whiten with little to no sensitivity. Fast prep time and only four 8-minute applications when used with the original GLO Hardware Kit or only two 8-minute applications when used with the new GLO PRO POWER+ In Office Technology. No lab fees, no impressions, no bleaching trays. Chairside Whitening Kit must be paired with the original GLO Hardware Kit OR with the new GLO PRO POWER+ In Office Technology - packaged separately. Each patient kit includes: 1 professional HP whitening gel dual barrel syringe 1 light-cured gingival barrier syringer 1 patented lip and cheek retractor 1 vitamin E and aloe lip care pot 2 gingival barrier syringe tips 2 whitening gel syringe mixing tips 1 tooth shade guide