Dry, cold winter prevents skin from maintaining a moist healthy condition due to the loss of natural oils, natural moisturizing factors, and vitamins. A good moisturizer will contain these three items with a low level of AHAs. You need to use a good moisturizer regularly and to apply it generously. Moisturizing skin helps replenish and retain the normal moisture content of the stratum corneum, keeping the skin soft and supple. Moist skin is healthy skin and healthy skin will tan better and more evenly than dry skin.