Hair is an integral part of human identity, serving as a canvas for personal expression and a marker of cultural heritage. Its structure, growth patterns, and the ways we care for it have fascinated scientists and beauty enthusiasts alike for centuries. This comprehensive exploration of hair uncovers the intricate biology that defines its unique characteristics and the diverse ways in which it manifests across different ethnicities and cultures.

In this guide, you’ll learn about the anatomy of hair, including the roles of the cuticle, cortex, and medulla, and how these components influence hair texture and strength.