Abstract: A condensation-proof mirror, for use in such high humidity environments as conventional shower stalls or steam baths, has its reflective surface heated by diversion of a portion of shower water or live steam to a manifold on the mirror's rear surface, from which manifold the heated water or steam is distributed across the rear surface, condensing into or flowing into a catch basin or any suitable drain, heating said rear surface by convective transfer from the water or steam, and conducting the heat, so transferred, to the front reflective surface, thereby raising the temperature of that front surface above the condensation temperature for the environment impinging on that surface.