The system is inexpensive in comparison to salon tech to wax or sugar both full legs. It's takes approx. 20 min for the system to heat the refills, I can use one cartridge to complete 2 full leg applications. Easy to apply, evenly applies when the wax is fully warmed, a trick I learned was to keep the unit plugged in vs. unplugging using, then as wax cools plug it back in...it wasted too much time and nothing bad with keeping it plugged in. Also when the wax is applied, and the cloth is applied I used the warm side of the charge unit to apply heat vs hand, and the wax came off leg onto sheet more consistently. Very easy clean up, little to no bumps or redness, compared to evil estheticians who rip strips off you like they are having a bad day and taking it out on us the paying customer then tingling leg pain. At first I did both legs in 30 and now in less time. I can go close to 3.5-4 weeks between waxes. then again raging hormones are different on everyone so time between applications does vary. As the wax is Brazilian formula I have also used on the bikini area and works well, takes more effort of counting to 5 vs 3 and ripping, lol