Hair is composed mainly of the protein keratin, which gives strength and flexibility, with an inner layer containing melanin that gives our hair its natural colour. An outer layer, called the cuticle, protects the hair. Because of this, protein is the most important nutrient for hair health. Salmon is full of healthy protein and Omega-3. The benefits of Omega-3 include adding lustre, sheen and elasticity to your hair because the nutrients found in Omega-3 are vital for the nourishment of hair follicles.