Widow’s peak and juvenile hairline (photo)

I put dots on the left side of this man’s hairline to show where his hairline probably was when he was 12 years old.  The movement of the hairline upwards from this dotted line is where the mature hairline develops.  The juvenile hairline would extend from the bottom of the widow’s peak to the temple points.  The widow’s peak is a genetic remnant of the juvenile hairline which shows nicely in this photo. IF this man got photos when he was 12 years old, I suspect that he would see a rounded concave hairline as I just described. Now what we see is a mature hairline with a gentle V-shape that hopefully will stop receding here.