Reason: The mucus contains plant alkali, and it will sting when it touches the skin.　　If your hands are very itchy, you can wash your hands carefully, and then dip them in vinegar, even the gap between your fingernails, and the itch will gradually disappear after a while! (Reason: acid-base neutralization) You can also roast it on the fire and turn your hands over and over again to heat them up.　　(For taro) peeling can be easy and simple, and will not get hands itchy! The method is very simple: prepare a pot of boiling water, wash the taro skin, remove the dirt impurities, directly into the boiling water to boil a little. After starting the pot, just use a kitchen knife to gently scratch from top to bottom to remove the outer skin effortlessly!　　A: When scraping the skin, Huaishan will ooze out a milky-white juice, which is highly irritating, and when touched by the hand, it will produce an itchy sensation, and washing with water will not help.　　Experiments have proved that this itchy substance - saponin, only heat can be destroyed.　　1. When the hands of taro skin scrapers and itchy, if you put your hands on the stove on the side of the fire slightly baked, you can stop itching. But use this method, must pay attention not to burn the skin of the hand.　　2. Use a basin to hold some water, add a little vinegar, mix well and then used to wash hands, can also stop itching.　　3. Scraping taro skin and hands feel itchy and unbearable, you can first rinse with water, and then wipe dry water stains, apply a little bit of essential oil and gently wipe, the itch is removed.