I fell on a tile floor in U of Oregon and hurt my butt. Went inside and the biomeds handed me a beaker of DSMO and said to rub some on. In minutes I could taste rotten eggs in my mouth and my skin warmed up and the pain was relieved in hours. This was in 1970. I went back home and immediately bought a plastic bottle of it (looked just like this container) and used it when ever I banged myself. If I remember it right the price was less than 2 bucks. Things have appreciated a lot. The university was doing research on DMSO which is nothing but distilled pine tar. It never took off because there is no money in something that cant be patented and sold for big bucks. Try aspercream and see what that costs.