Dry skin can cause dandruff and possibly increased scratching. Central heat and/or air conditioning, and dry cold winter weather can cause dry skin. Poor diet and/or a vitamin/mineral deficiency can also contribute to the condition. The most effective remedy for dry skin is nutritional supplementation. Feeding vitamin supplements with vitamin E and Omega fatty acids will take 2-3 weeks for results, but will result in a shiny vibrant coat and healthy hydrated skin. Using a moisturizing shampoo can also help. A room humidifier can also help eliminate dry skin.