Many raw diets focus on promoting a healthy skin and coat, mainly through the supplementation of essential fatty acids. Fatty acids play an important role in the structure and function of cells, while also improving palatability of the diet. Omega-6 (n-6) and omega-3 (n-3) are especially important for normal skin function and appearance. The skin's ability to produce long chain fatty acids, such as linoleic acid (18:2n-6) and linolenic acid (18:2n-3) is limited. For this reason, these fatty acids are especially essential for skin health and many raw diets make sure they are properly supplemented.