Ultradent Opalescence Boost PF 40% Intro Kit IN Office Whitening #4750 (Bulk Pack 4xSyringes)4 x 1. 2 ml Opalescence Boost Activator syringes 2 x 1. 2 ml OpalDam Green syringes 2 x IsoBlocks 2 x Shade guide cards 2 x Luer Vacuum Adapters 2 x SST tips 20 x Black Mini tips Opalescence Boost in office power whitener is a chemically activated gel that provides brighter, whiter teeth after about an hour in the dental chair. Chemically activated, so no light is needed. Powerful 40% hydrogen peroxide gel. Contains PF (potassium nitrate and fluoride)