Prevention actually is the best treatment for a good-appearing skin. First of all, avoid sun exposure. This means if your outdoors to wear sunscreen and reapply it as directed. If not you can use photo-protective clothing, hats and sunglasses. Use Block It! daily. Also avoid smoking as well as second- and third-hand smoke when possible. If you are a smoker you need extra Vitamin C to help counteract the damage you are doing to your skin, add Firma Serum under your moisturiser.
Eat healthily and include plenty of fruit and vegetable and healthy fats in your diet. Finally, regular exercise will boost circulation which will also aid skin health.