Opalescence Boost PF - 40% HP In-Office Power Whitener, Intro Kit: 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, 10 x Micro 20 ga tips, 10 x Micro 20 ga FX tips. Powerful 40% hydrogen peroxide gel is chemically activated, so it doesn’t require a hot, uncomfortable light to work. Contains PF (Potassium nitrate and Fluoride). Fresh chemical for each application. Intro kit