I certainly agree with Lou about not using DMSO. Dangerous stuff. It can quickly carry anything dissolved in it directly through the skin and into the system. I once read that the CIA dissolved a poison in it and put it on the steering wheel of someone they wanted to assassinate.
In the late 60s or early 70s, a company in L.A. used a silver solution of it in a component they called E-cells - electrolytic (or, electronic) timing devices. Neat all gold plated components about an inch long filled with a sealed solution, if I remember right. A very small DC current deposited the silver on an internal cathode and I heard that they could be set to go off as long as 20 years in the future, accurately, depending on the current used. I assume that, when the DMSO was nearly depleted of silver, the resistance increased and this activated something. When the company decided to stop making them, a large refinery I worked for ended up with about 50 drums (2500 gallons) of this solution that contained about 2 pounds of silver per gallon. We spent about a month trying to figure out how to safely recover the silver. The silver was easy to reduce or plate out but doing it safely was another story. I'm thinking we ended up shipping it to some company that was already set up to handle it. I'm sure full body suits were involved.