Turkey

Another great low fat source of protein is turkey meat. The dark part of the bird meat has an added, beauty-boosting and anti-ageing quality to it, too, and contains twice the amount of riboflavin and zinc in it as white meat. Zinc might only be needed in trace amounts by the body, but it is essential for the production of protein, and therefore collagen. So if you want a fresh, youthful complexion, go for foods rich in zinc.