The warm professional roll-on wax is the easiest, most effective and fastest to use. . This roll-on wax cartridge is used with a wax heater that keeps the wax at the right temperature. A single pass is sufficient to apply the wax. The warm wax is removed with a strip of non-woven fabric in a quick and painless procedure. This wax cartridge allows you to do: - 4 to 5 depilations of the half-legs depending on your hair. - 2 to 3 whole leg depilations - Heat the Roll on with the wax cartridge for the time indicated in the manual. - Apply the warmed wax to the part to be depilated in a very thin layer. - Place a strip of fabric on the wax for 20 seconds, until the wax adheres to the strip and the hair as it cools. - Tear off the strip in the opposite direction of planting the hair. (You can re-use this tape several times). - Repeat this operation on the rest of the areas to be depilated. - At the end of your depilation, remove the wax residue from your skin with the post-depilatory oil or lotion.