The Triangle of Hair Structure
- cataplt
- Mar 7
- 1 min read
Cuticle, Cortex, and Medulla
The triangle of Cuticle, Cortex, and Medulla represents the three main layers of a hair strand, each contributing to its structure, strength, and appearance. Together, these layers define the characteristics and health of hair.
Cuticle: The cuticle is the outermost layer of the hair, composed of overlapping, scale-like cells. It acts as a protective barrier, shielding the inner layers from damage caused by heat, chemicals, and environmental stressors. A smooth cuticle reflects light, giving hair its shine.
Cortex: The cortex is the middle and thickest layer, providing hair with strength, elasticity, and color. It contains keratin and melanin, which determine hair’s texture and pigment. The cortex is also responsible for hair’s ability to stretch and return to its original shape.
Medulla: The medulla is the innermost, often hollow layer, found primarily in thicker or coarser hair. Its role is less defined but contributes to hair’s overall structure.
Balancing cuticle, cortex, and medulla ensures healthy, strong, and vibrant hair.
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