Where are the blood vessels that nourish the hair located?

The blood vessels that nourish the hair are located in the hair papilla. The hair papilla is a small, bulb-like structure at the base of the hair follicle that contains blood vessels and connective tissue. These blood vessels supply essential nutrients and oxygen to the hair follicle and growing hair cells. This nourishment is crucial for the hair's growth and health, as the hair itself does not contain living cells when it emerges from the skin.

While the hair follicle surrounds and supports the hair, the actual nourishing blood supply comes specifically from the hair papilla. The hair bulb, which is located at the base of the follicle, is where the active growth of the hair occurs, but it relies on the blood supply from the papilla. The hair shaft is the visible part of the hair that is above the skin and does not contain any blood vessels or living tissue, making it less relevant in this context.