Hair Eternity Proper nutrition is essential to good hair as is proper rest. Eat well, be sure to drink plenty of water and get enough calcium, which is important for healthy Hair Styling. Getting enough sleep is also important a to help your body function properly and maintain your hair's normal facilities. Being ill can cause hair loss so if you keep your body tuned up and take good care of yourself to stay strong against illnesses, your hair will have a better chance.