The cuticle of the inner root sheath is a layer of cells that plays a crucial role in the structure and function of hair follicles. It is part of the inner root sheath (IRS), which is one of the three layers that surround the hair shaft. The other two layers are the Henle's layer and Huxley's layer. The cuticle of the IRS is located closest to the hair shaft and interacts directly with the cuticle of the hair itself.
