Normally, it disappears within 1 to 5 hours. The disappearance time depends on the amount of capsaicinoid content on the skin, the more capsaicinoid content, the longer the hot hand.
The reason why chili peppers are hot is mainly due to the capsaicinoids contained in the liquid chili peppers. Capsaicin stained on the skin will make the skin blood vessels congestion, skin redness, heat, thereby stimulating the pain receptors on the skin, feel hot hands or skin burning pain phenomenon.
When this happens, do not panic, you can apply alcohol to the discomfort or use warm water to wash your hands, in order to dissolve capsaicin, you can also use vinegar to wash your hands, acid and alkali neutralization reaction, which reduces the content of capsaicin.
When you get irritating liquids on your hands, you need to clean them up promptly. If a rash or itch occurs, seek medical attention.