There is a serious debate going on here at Lane Crawford. On one side, a yoga-obsessed occasional spinner who cannot fathom stepping foot in the gym without a full face of makeup and on the other, a competitive marathon runner who is simply unable to have an inch of foundation on her skin as she breaks a sweat.

While common sense may tell us that make-up and sweat cannot possibly make a good combination, on a scale from skin crime to no big deal, how bad is it to wear makeup to the gym? We invite New York-based dermatologist Dr. Doris Day to settle this dispute once and for all.