I can not be 100% certain this far down the road what he used on his horses or his wife but at the time, he told me that it was DMSO. I don't know where he got

I can not be 100% certain this far down the road what he used on his horses or his wife but at the time, he told me that it was DMSO. I don't know where he got it but he was well-connected in the horse world. He had a long career as a wrangler for Hollywood westerns after setting several records himself as a young cowboy in rodeo events as a bronc-buster, calf roper, header/heeler even setting one record in a rodeo at Madison Square Garden. He participated in founding the American Quarter Horse Association. He told me he had trained several actors over the years including a couple from the old TV series Rawhide who had never ridden a horse before that show. He knew Gene Autry, Tom Mix, Roy Rogers and Dale Evans, and worked with them and other western movie stars at one time or another. He knew horses, mules, saddles and tack like the back of his hand and he understood cigars, whiskey, and women intimately as any real man did back then. My wife uses Penetrex here at home for sore muscles. She claims to get some benefit from it. I was not aware that there were two compounds, DMSO and DMSO2 but we definitely have Penetrex here at home. It is possible that the product he used back then was DMSO2 if it was widely used in the 60's through 80's in horse liniment. I actually had to look them up to get a feel for the differences between them. Thanks for asking.