text: what is a weave exactly?   weave is a type of hair extension used by people who want to try another style.  it is used when you either don't have enough hair, want your hair to be fuller, or just don't want to cut your hair to that style.  weave can be glued in or sewed in, depending on what you like.  there are many celebrities who get hair extensions (weave) such as paris hilton, beyonce, etc.  its definitely in........ you should definitely try it at least once.