Milly,
I am a holistic health counselor and nutritionist, and I have seen time and again, in myself and in clients, the magic of diet. Make sure to be getting lots of pure, filtered water, brightly colored vegetables, fiber, healthy fats, whole grains and good quality protein. Eliminate or restrict sugar, white flour, alcohol, refined and processed foods, soft drinks and coffee.
Think of the foods you eat as creating the skin you want. If your food is dull and lifeless, your skin will be too as it is a mirror for your health.
Hope that helps!
Ana