DMSO is a derivitive of wood production and used as a powerful pain reliever when used as a rub on sore muscles.
DMSO per 30 ml
You can order any amount and calculate it at $2/oz.
DMSO also draws in whatever you might have on your hands so make sure your hands are very clean before applying to your skin. Remove and polish from your nails as it acts as a solvent and will pull that into your system as well.