How many layers of epidermal cells does hair consist of?

The hair itself is composed of three main layers of epidermal cells. These layers include the medulla, cortex, and cuticle. The medulla is the innermost layer, which may not always be present, especially in finer hair types. The cortex surrounds the medulla and contains the fibrous protein keratin, which gives hair its strength and elasticity. Finally, the cuticle is the outermost layer, composed of overlapping, scale-like cells that protect the inner layers and help prevent damage. Understanding this structure is crucial in the context of hair treatments, including waxing, as it informs how hair responds to various techniques and products.