Will Ear Cartilage Regrow in Ear After It is Used in Rhinoplasty?

Ear cartilage does not grow back once harvested.  Cartilage is generally taken from the bowl of the ear, so that it does not result in a significant aesthetic deformity.  If a secondary procedure is required, the other ear, the nasal septum, and ribs are the only other options for cartilage grafts.

Ear cartilage grafts are usually taken from the concha (bowl) of the ear which does not  usually lead to any significant change in the appearance of your ear. Once it's removed, it does not grow back.