Milady's Professional Barbering Practice Test

The three main layers of the hair shaft are indeed referred to as the cuticle, cortex, and medulla.

The cuticle is the outermost layer of the hair and consists of overlapping, scale-like cells that protect the inner layers and contribute to the overall strength and shine of the hair. It acts as a barrier against environmental damage and helps to keep moisture in.

The cortex is the middle layer of the hair and is responsible for the majority of the hair's strength, color, and texture. It contains keratin, a protein that gives hair its structure, and is also where melanin is found, which determines hair color.

The medulla is the innermost layer, which may or may not be present in every hair type. It is a central core that is thought to play a role in the overall strength and structure of the hair, although its exact function is not entirely understood.

Understanding the composition of the hair shaft is essential for barbers and stylists, as it impacts the choice of treatments and products used on the hair. This knowledge helps in maintaining hair health and achieving desired styling results.