As one of the Quick Reads in this unit explains, hair and fingernails are not alive, but they are considered living things because they are part of a living thing. Similar differences should be noted between the terms non- living and dead. Mushrooms do not appear to move but they are living things.
Considering this, is hair made of dead skin cells?
Tiny blood vessels at the base of every follicle feed the hair root to keep it growing. But once the hair is at the skin's surface, the cells within the strand of hair aren't alive anymore. The hair you see on every part of your body contains dead cells.
Are fingernails made of dead skin cells?
Fingernails grow from the matrix. The nails are composed largely of keratin, a hardened protein (that is also in skin and hair). As new cells grow in the matrix, the older cells are pushed out, compacted and take on the familiar flattened, hardened form of the fingernail.