Diet plays an important role in hair growth. Hair is protein-based and therefore it is important to get enough protein in your diet for healthy hair growth. Other essential vitamins and minerals that are important for healthy hair growth include omega-3 fatty acids, iron, zinc, biotin, and vitamin B12. Having a balanced diet with these essential nutrients provides your hair with the necessary building blocks for growth. Furthermore, it is important to stay hydrated for healthy hair growth. Drinking plenty of water helps to keep the scalp hydrated and can promote proper circulation for healthy hair growth.