Ace the South Dakota Cosmetology Test 2026 – Style Your Future with Confidence!

The primary role of the cuticle in hair is to protect the inner layers. The cuticle consists of overlapping, scale-like cells that form a protective barrier around the hair shaft. This outermost layer safeguards the more vulnerable inner layers, such as the cortex and medulla, from environmental damage, chemical exposure, and physical wear. By serving as this protective shield, the cuticle helps to maintain the integrity and health of the hair. A healthy cuticle contributes to overall hair strength and prevents moisture loss, allowing the inner structure to remain hydrated and resilient.