Hair rings were used to adorn wigs and Egyptian hair. The Egyptians wore their hair in many styles, and this helped distinguish social classes. A wig-maker was a professional job in Ancient Egypt, and there is evidence of the use of henna to remove grey hair, and anti-baldness remedies. Finer hair rings were usually made of ivory, jasper and even gold.
To learn more about the use of faience in Ancient Egypt, please see our relevant blog post: What is Egyptian Faience?