In some cases where the donor area is not sufficient in the head and the person wants full coverage,body hair are used.
Shadow area of the beard has very goog quality hairs and those are very strong and grow extremely well. But a very rare complication is scarring or KELOID formation. So all these aspects are conveyed to the client before transplant.
But in extreme cases of baldness it’s worth taking the risk because KELOID formation occurs in less then one percent of the cases.
Pubic hair also grow reasonably well and are used very often. Chest hair are only used if those of exceptionally good quality otherwise those are not very successful.
Hair from arms legs and armpits are rarely used as those are of not good quality