This is what I do...
Take about a tablespoon of DMSO and put it on your ankle, forearm, inside of knee/elbow, etc, but don't really rub it in yet. Then, put the finely crushed up fina on top of the DMSO on your body. Then, start rubbing it in well. Then put saran wrap over the bodypart and go to sleep or let it stay for about four hours. That's all, bro. It's not to hard. Let me know how it goes. Good luck.