It is not allowed for us to put it on our head.

Therefore, using human hair in any shape or form would be unlawful. It is prohibited to join one’s hair with the hair of another human or to wear a wig made out of human hair, regardless of whether the hair is completely joined and fitted into the hair or whether it is merely a wig which can be removed and re-worn whenever one desires. The ruling would be same even if one had a valid excuse in that one’s hair fell out, as the Messenger of Allah (PBUH) did not permit it even in such situations.