Omega-3 fatty acids are important nutrient for the body. They keep our hearts healthy, and keep our skin soft, smooth and moisturized. They also help our skin age more smoothly. Fish, especially salmon, is a great food for skin health, incorporating Omega-3s into your diet. Also consider flax seed supplements or flax seed oil as another source for this nutrient.Flax seed oil is a good option for vegetarians to get a healthy and firm skin.