Disclosed is the use of a compound of Formula I for treating or ameliorating a hair related condition such as hair de-pigmentation, limited or short hair growth, hair loss, vitiligo or alopecia. A specific example of a compound of Formula I is N-acetyl-(R)-(-)-3-(4-aminophenyl)-2-methoxypropionic acid. The compound of Formula I is also useful for cosmetically enhancing hair growth.