What does Kertian do for the cuticle and cortex of the hair?

Kertian is a term often associated with keratin, a fibrous protein that plays a crucial role in the structure of hair. It strengthens the cuticle, the outer layer of the hair, providing protection and resilience against damage. Additionally, keratin contributes to the health and integrity of the cortex, the inner layer, which contains the majority of the hair's strength and elasticity. Overall, keratin helps maintain the hair's structure, shine, and overall appearance.