Here's why:
* Melanin is produced in melanocytes. These specialized cells are located in the hair bulb, the base of the hair follicle.
* The cuticle is the outermost layer of the hair shaft. It's a protective layer composed of overlapping scales, and it doesn't contain melanocytes.
* Melanin is deposited into the cortex. This is the middle layer of the hair shaft, where it determines the hair's color.
So, while the cuticle helps protect the hair, it doesn't play a role in melanin production or color determination.