Fish oil, which is high in omega-3 fatty acids, can undoubtedly help you develop long hairs. Fish oil or omega-3 and other substances like antioxidants may be found in pills. Fatty fish, such as salmon, sardines, cod, trout, and different similar kinds of fish, have the highest levels of omega-3s in food. Supplements containing fish liver oil, mussels, and entire fish are also helpful for hair. However, when it comes to hair development, eating a nutritious diet, using mild hair-care products, and seeking therapy if you are thinning hair are the most viable methods.