Why does alcohol feel cold when it touches the skin?

Answer:
Because you forgot to light it first. Seriously, when alcohol evaporates, it uses heat energy it gets from your skin. Heat energy travels from hot to cold, leaving a heat deficit (cold) on your skin.

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It evaporates really fast which cools your skin momentarily...

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The boiling point of alcohol (aka the temperature at which it evaporates) is much lower than water. So, if you get it on your skin, it will feel cold because it is evaporating very quickly.

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Alcohol evaporates very quickly. Especially if the item it comes in contact with is warm or a little warmer than it is. The quick evaporation sucks the heat out of the surface of the item the alcohol has come in contact with. This results in the cold feeling when in reality it is not all that cold.

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Because, it goes through your system.

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Evaporation is a cooling process, Alcohol evaporates at a much cooler temp then water.

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