Growth of nasal bone is completed by:
10 years
11 years
13 years
7 years
Growth of the nasal bone is complete at about age 10. Growth thereafter is only of the nasal cartilage and soft tissues, both of which undergo a considerable adolescent spurt. The result is that the nose becomes much more prominent at adolescence, specially in boys.
Ref: Proffit 6th ed page no 37