Hi there.
If someone was born with receded corners does it mean his hairline will not mature?
The hairline you have at birth isn’t an indicator of where your hairline will go as you age.
We are all born looking different — rounded corners (Bill Clinton), low hairlines (Sean Penn), etc. These can be changed with a good hair transplant doctor if you do not like it. Receded hairlines generally refer to maturing hairlines in many men or early frontal balding in others, but I generally do not like changing these in very young men (under 26 years old) as you may continue to lose hair as you get older.