My ex had a semi-harry back and because he lifted weights he would shave everywhere but of course couldn't reach his back. Well he ordered all that stupid crap like epil stop and spray and even Nads....didn't work. So I went out and picked him up a bottle of Nair....
SO GROSS. He laid on his stomach on our bed and i put that stinky, goopy pink stuff on and left it there for like a minute or so. Then I took a warm wash cloth and wiped up clumps of hair. I about GAGED. Plus he had some sweat pimples and the stuff was so strong they started bleeding
Then...I was brilliant and decided to try it on my bikini line....
OH DO NOT GO THERE! It burned my skin so bad! I couldn't touch that area with a razor for like a week cuz it hurt.
So,proof shows, in my two cases, that it does work.