Contrary to what most people on here say and yes the instructions say not to, but my friend and I both use the stuff downstairs. Though we do put a rolled up paper towel between things to make sure no migration happens and use a washcloth to get it all off before rinsing with the shower hose. I personally prefer this way since there is no itching when it grows back BUT it only lasts a day or two and it can take a couple times (a day apart please) to get everything off if its been a while.
You just cover your whole leg and leave it on for like 5min then scrape it off. It doesn't burn and yes you can use it down there but only on the bikini area and don't use it anywhere near your inner labia or anus or it will burn. Just shave around those areas. Oh and also you have to leave it on for 10 min down there because the hair is thicker
I cover my whole leg but you can section it if you'd like. It might tingle or itch but it doesn't burn unless you leave it on for a super long time. You can't use it "down there" except your bikini line & butt.