The first treatment went largely as planned. My wife spread about 1½ ml of the coconut/capsaicin oil on the target area and covered it with plastic wrap. No real sensation of heat for the first half hour, then it warmed up considerably. Not even close to uncomfortable. After a little more than an hour she removed the wrap and said the skin looked normal with a slight oily sheen. Since I was watching something interesting on the TV, I waited another half hour before hitting the shower.
This is where it went wrong. I assumed I'd get under the hot water and after a good rinse, have my wife glove up again and scrub it for me. When the hot water hit my back it was like a gas attack. A take your breath away type of sensation. After a while when it was safer for my wife to come in the shower room, she used a paper towel soaked in alcohol to rub it down and cut the capsaicin. This helped a lot.
I overlooked the part in the actual capsaicin prescribing info regarding the second component in the patch kit that said: "generously apply Cleansing Gel (butylated hydroxyanisole, carbomer copolymer, edetate disodium, polyethylene glycol, purified water, and sodium hydroxide.) to the treatment area and leave on for at least one minute. Remove Cleansing Gel with a dry wipe and gently wash the area with mild soap and water and dry thoroughly." Apparently using the cleansing gel that comes with the patch kit is important to neutralize the capsaicin before washing. Imagine that!
After paying more attention to the patch prescribing information and our experience of today, it's apparent it's not an impediment if all capsaicin is noty absorbed. Maybe it's not supposed to but yet and still, for the next treatment I will use the emu oil as a carrier to ensure more of it is. Additionally, I have certainly learned it may be worthwhile to try to duplicate that "cleansing gel" of BHA, EDTA, PEG, lye and whatever that other thing is. Or maybe it's sufficient to do the good alcohol cut and rinse prior to the shower. Funny thing is in all the mixing and cooking and application and treatment time, there never was a hint of a noxious fume that emanated from anything until the hot water hit it. The good part is I think we now know a bit about how pepper spray works.
The hot water did considerably turn up the heat in my back and this lasted for an hour. It also gave my back a bit of a sunburn look for a while but no a big deal. A nice effect immediately noticeable is the constant pain in my back is gone and now it's six hours later. Will it last for 12 weeks? Me no think so but I'm ready for further exploration as needed.