Hello, usually, according to the survey data of population growth and development, boys are about 20 years old and girls are about 18 years old. Their physical development is basically stereotyped, their nasal bones are basically well developed, and their alar cartilage and lateral nasal cartilage are mature, with no major changes. At this time, if there is still a defect in the bridge of the nose and there is a requirement for cosmetic rhinoplasty, surgery can be considered.