Getting Chili Oil Off Your Hands
Capsaicin is an oily alkaloid. Water alone won't touch it, which is why washing your hands under the tap after handling hot peppers usually just spreads the burn around. The actual mechanism here is simple solubility: capsaicin dissolves in fats and alcohols, so you need something that can break that bond and lift it off your skin.
Como tirar pimenta da mão de verdade
The most reliable method I've found involves cooking oil and dish soap. Pour a generous amount of any neutral oil into your palms, rub it thoroughly over every surface including between fingers and under nails, then rinse and follow with dish soap. I've used this after accidentally getting habanero residue on my hands during a batch of salsa. The oil pulls the capsaicin out of the skin pores, and the soap emulsifies it away. Without the oil step first, the soap just slides over the surface and does nothing. Dairy works too if you're already in a kitchen. Full-fat milk or yogurt rubbed onto the skin, left for a few minutes, then washed off. The casein protein binds to capsaicin molecules. Not as fast as the oil method but decent when you have nothing else. I once had a client who insisted on using toothpaste, which is a terrible idea. The mint and abrasives irritate already-sensitive skin and add nothing to actually removing the compound.
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Why rubbing alcohol isn't the best choice
People recommend vodka or rubbing alcohol constantly, and technically it does dissolve capsaicin. The problem is that it strips your skin barrier badly and can make the burning sensation worse by opening micro-tears in the epidermis. You're trading one problem for another. I've seen this go wrong enough times that I don't suggest it anymore unless it's a one-time emergency with nothing else available.
What not to do
Don't scrub hard with a brush or pumice stone. You're going to damage the skin and push the oil deeper into pores. Don't use hot water, which opens pores and increases absorption. Cold water is fine for comfort but doesn't help with removal.
A note on prevention
Nitrile gloves are the only thing that actually works reliably. Latex is permeable to capsaicin over time, especially during extended prep work. I learned that the hard way after a long day of deveining serranos with latex gloves and still ending up with a burn that lasted two days. Switched to nitrile after that and haven't had an incident since. If you're dealing with extremely potent varieties like ghost pepper or Carolina Reaper, even nitrile isn't foolproof if you're handling them for more than twenty minutes straight. The compound can degrade certain polymers. Paper towels dampened with oil and worn as a barrier layer under gloves adds a bit of extra protection for those situations.
