2. Eat a healthy diet and take a multivitamin
Hair is primarily composed of protein. And the building blocks of protein are amino acids. Amino acids are found in tons of healthy foods like fruits, vegetables, and lean meats. Thus, having a diet rich in amino acids, as well as other vitamins and nutrients from a multivitamin (i.e. biotin and vitamins a, e) helps to assure that your body is building the strongest, most healthy hair.