Higher indoor temperatures, dry air and the cold weather outside have a drying effect which affects the skin’s natural sebum production and protective barrier. This leaves the skin more prone to infection and irritation, and without the natural oils of the skin to seal in the moisture, it’s far too easy for the radiator and the dry cold to steal moisture from the delicate protective layer on the surface of the skin. This can result in dryness, dehydration and a feeling of tightness.