The cuticle is the outermost layer of the hair shaft and consists of transparent, scale-like cells that overlap like shingles on a roof. These cells protect the inner layers of the hair from damage and give hair its smooth texture and shine.
The cuticle is essential for healthy hair. When the cuticle is damaged, hair can become dry, frizzy, and prone to breakage. There are many things that can damage the cuticle, including heat styling, chemical treatments, and sun exposure. To protect the cuticle, it is important to use gentle hair care products and to avoid over-styling.