I've just bought some Dit Dar Jow off a martial arts store but the guy who sold it to me just told me to apply it to bruises or soak your entire hand in it after doing the iron palm. My concern is here that from what I've read in the past, there should be preparations such as heating it up and something about using vinegar to extend the life of it.
And if you got the time, can you enlighten me on the drills to do the iron palm? My sifu's iron palm including the medicine cost 600 bucks, I would pay him if I wasn't on such a budget, he probably doesn't have control over the pricing either so I don't want to negotiate with him.
Oh by the way, to reduce the amount of dit dar jow wasted, I soaked a paper towel and applied it to my injured area for about 20 minutes, if anyone sees anything wrong with this, please tell me. I'm new to how to work it.
Thanks.