One year hair growth is the length that hair grows on average over the course of one year. For most people, this amounts to about 6 inches or 15 centimeters. Hair growth is influenced by genetics, age, and nutrition, among other factors.
Tracking hair growth can be an important part of assessing overall health, as well as monitoring the effectiveness of hair care treatments and products. Historically, hair has been considered a symbol of beauty and status throughout cultures, with one year hair growth representing a significant milestone in many traditional practices.