Polaoffice+ In-Office Tooth Whitening System – 1 Patient Kit without Retractor Polaoffice+ In-Office Tooth Whitening System is a neutral pH whitening gel with built-in desensitizing properties that inhibit post-operative sensitivity. Potassium nitrate, the key pain-reducing ingredient, penetrates the nerve endings by blocking transmission of sensitive nerve impulses to provide a calming effect. 37.5% hydrogen peroxide No bleaching light required Simple delivery Only three 8-minute applications required 1 Patient Kit: • 1 X 2.8 mL syringes of Pola Office+ • 1 X 1g Gingival Barrier syringes