Eat plenty of fruits, vegetables, meats, and fish. Diet may seem unrelated to your hair, but it makes a huge difference. Diet also has the added benefit of improving your body at the same time. Since hair is made of protein, make sure you’re getting plenty of protein in your diet. People who suffer from anorexia nervosa or those who undergo extreme weight-loss programs will experience stunted hair growth.
Some proteins to consider incorporating into your diets: lean meats such as chicken and turkey, fish, eggs, soy products, beans, and nuts. These foods will help promote healthy keratin production, which are the building blocks of hair.
Make sure you’re getting enough iron and zinc. Iron and zinc, along with other vitamins, are essential in creating great, healthy hair. Iron is responsible for delivering oxygen to your cells, from the blood in your toes all the way up to your hair follicles. (That’s why blood smells like iron.) Lean animal meats are great ways to get iron, but if you’re vegetarian, consider eating beans, lentils, and soy products such as edamame or tofu.
Get enough vitamin C. Vitamin C deficiencies can cause hair that is weak, lusterless, and prone to breakage.
Your body uses vitamin C to build collagen, which is crucial in developing hair growth. Vitamin C also assists in breaking down iron, another building block of hair, so maintaining good levels of vitamin C is necessary to absorb iron.