Hair Science & Biology

Understanding the biological foundations of hair health. These articles cover the anatomy of the follicle, the physiology of growth cycles, and the genetic factors determining hair characteristics.

Follicular Anatomy

Structure of the hair shaft, bulb, and dermal papilla.

The Growth Cycle

Anagen, Catagen, Telogen, and Exogen phases.

Genetics & Hormones

Role of DNA, androgens, and other signaling molecules.