Now hair this! This is the hard protein that hair is made of, whether you've got straight red hair, blond curly
locks, or black twisty braids. Keratin is also an important part of nails and skin.
Note: All information is for educational purposes only. For specific medical advice,
diagnoses, and treatment, consult your doctor.
Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock,