Hi
My boyfriend uses this product, he gets his from his barber. I'm sure you can get it elsewhere but if you want it quickly ask in your local barber shop or go to your local hairdressing wholesale supplier, they may stock it.
From my understanding it is used for ingrowing hairs and shaving bumps, my boyfriends barber appplied it neat to his skin, he said the pain was excrutiating but it worked!! Please don't let this put you off getting it, his ingrown hairs are really bad. It isn't normally applied neat, and he bought some after his hot towel shave, it was in a tiny bottle and he rolls it on, and yes it is diluted lol
HTH xx