Quick and gentle office teeth whitening in less than 1 hour. The active substance content of the product is 40% HP, which, when mixed, and applied it to the tooth, contains 32% active substances. No special device is required to use it, only the whitening material itself. Mixing the material in the double syringe and applying it to the surface of the tooth with the associated beak is extremely simple. The exact application and removal of the gel is significantly facilitated by the Yellow color. Unopened syringes are 24 months from the date of manufacture. It's a chemically active compound. Kit contains: - 1 x 2.5 ml Power whitening YF 40% HP gel. - 1 x 1.5 Gr x Gingiva protector (gum protector). - 1 x 1.2 ml After whitening mousse (sensitivity reduction).