Pepper can relieve pain: Pepper has been used to relieve pain since ancient times, but scientists have only recently learned that capsaicin can stimulate and exhaust nerve conduction substance "P", and substance P can spread pain information throughout the nervous system. Through the analgesic principle of capsaicin, pepper paste has been used to relieve pain such as herpes zoster and trigeminal neuralgia.

Pepper can make the skin red: When capsaicin is applied to the skin, it will dilate capillaries and promote circulation, which will make the skin red and hot. At present, some manufacturers have used this principle to put capsaicin into socks to become "Chili socks" for heating in winter.

Pepper can relieve cold symptoms: For thousands of years, spicy food was often thought to remove phlegm, but now it seems to be the same. Spicy food can dilute the mucus secreted by the throat and help to expel phlegm, so as not to obstruct the respiratory tract

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So capsaicin will not harm the skin.