Good question.Your skin is an excellent barrier and nowhere more so than on the soles of your feet where the skin is thicker than on other parts of the body. The manufacturers of Vicks Vaporub recommend that their product be rubbed on your chest where the menthol in the Vicks gives a nice warm feeling and the menthol fumes which are given off soon give relief of coughs and colds.If it was a definite fact that Vicks is absorbed from the feet there would be scientific evidence by now and reports in the medical journals about this way of treating coughs.
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