I've thought about trying this method for awhile, because I know capsaicin binds to oil. It's pretty logical, but I haven't heard anyone mention it before. I licked some tomato off my finger today when making sweet potato black bean chili. I'd chopped jalapenos for it, and of course my lips burned.
I washed my hands in vegetable oil (a couple of tablespoons), wiped off as much oil as I could, and then washed the remaining oil off my hands with hand soap. No burning on my lip. Rather cautiously, I then touched the inner corner of my eye. No burning! I guess I might not advise that if chopping habaneros, but nonetheless, this removed enough capsaicin so there was no burning.
I make Ukrainian Easter eggs, and to finish them I roll them in polyurethane in my hands. The polyurethane doesn't penetrate the skin, but there's a problem getting rid of the polyurethane. (Mineral spirits or turpentine are toxic). The magical thing to do is wash my hands in oil, wipe them off, and then wash with soap. No more sticky polyurethane. So if you find yourself with polyurethane on your hands know this works for that too (probably for oil paints as well). Originally read this tip in a craft magazine.
Here's the sweet potato black bean chili recipe, btw: