Final answer:
A hair cuticle is the outermost layer of a hair strand. It is composed of scale-like cells called cuticle cells that form a protective barrier around the inner layers of the hair. The cuticle plays a crucial role in maintaining the health and appearance of the hair.
Step-by-step explanation:
A hair cuticle is the outermost layer of a hair strand
The hair cuticle is composed of scale-like cells called cuticle cells. These cells overlap and form a protective barrier around the inner layers of the hair. The cuticle plays a crucial role in maintaining the health and appearance of the hair by preventing moisture loss, protecting the cortex, and providing a smooth surface for light to reflect off, giving the hair its shine.
For example, imagine the hair cuticle as roof shingles, with each cuticle cell overlapping and forming a protective layer that prevents damage to the inner layers of the hair.