★★★★★
You can buy both products on Amazon, but I found the pure liquid is cheaper at " Pet Meds". The gel is 70% DMSO and 30% aloe. From all I've read, and that's quite a lot, it is more effective at the 70 / 30 ratio when applied toppically.
If you want to learn more about DMSO, there is a good but short book available online from "HOOPLA". I don't remember the authors name, but the book is, "What Doctors Need to Know about DMSO."
At present time, I am also using it topically to treat my 'shingles', and it is working unbelievably well. I simply apply the gel several times a day. It has stopped the spread and kept the rash to limited space, as well as reducing pain.