切辣椒时,有一种叫辣椒素的物质粘在皮肤上,会使毛细血管扩张,导致皮肤发红、发热,还会刺激痛觉神经,让人觉得烧手。辣椒素可溶于乙醇及碱性溶液中,但不溶于冷水,所以用冷水冲、冰块敷都没有效果。而牙膏呈弱碱性,切辣椒后,在手上涂一层牙膏,完全将皮肤遮盖住,坚持5分钟,或者以牙膏 When cutting peppers, there is a substance called capsaicin stick to the skin, will make the capillaries dilate, causing the skin redness, fever, but also stimulate pain nerves, people feel burning hands. Capsaicin soluble in ethanol and alkaline solution, but not soluble in cold water, so cold water, ice deposited no effect. The toothpaste was weakly alkaline, cut peppers, the hands of a layer of toothpaste, completely cover the skin, adhere to 5 minutes, or to toothpaste