Is your DMSO frozen or crystallized?
The Solution is simple.
The first thing you have to know is that if the DMSO you received is frozen/crystallized, this is not a bad thing at all. In fact it is a good indication that the DMSO is actually more than 90% pure, which also means that is it fit for human use. DMSO will only crystallize if it is highly pure and when the temperature is less than 18 degrees.
The simplest method of defrosting/decrystallizing the DMSO is to simply fill a bowl or bucket with hot tap water and place the bottle of DMSO in the bowl/bucket. Within seconds the DMSO will begin to defrost/decrystallize.