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#4 – Why is rubbing alcohol sting?

10 Most Weird Questions Answers Ever Asked!

via complain

When rubbing alcohol gets a cut, it acts directly on the vanilloid receptor-1 in the skin. These receptors are responsible for the perception of heat. While they are activated at high temperatures, the alcohol reduces their threshold to a level at which the body temperature is sufficient to activate them. Receptors "appears" that the body burns and they transmit pain signals to the brain, even if the skin is not damaged.

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