Asymmetry means to have traits that do not exactly match each other on both sides of a face. Almost everyone has a certain amount of asymmetry on their face but when this is noticeable it requires correction.
Besides genetics there may be other reasons for facial asymmetry like Bell’s palsy, torticollis etc. and they all can be addressed surgically.
Surgical procedures may include fillers, implants, correction of facial palsy or rhinoplasty etc.