How Do You Know If a Mature Hairline is Just a Mature Hairline?

I noticed that the hairline matures between the ages of 17 and 29, according to this site. I’m just curious as to how you came to that conclusion. I’m 23 and while my hairline has matured, I’m not thinning at all at top. Does that mean if I’m not showing signs of hair loss at 30, then I probably won’t?

If you are worried about losing hair, then you should see a doctor for an objective examination. Some people may just have some front hairline recession and that is it. It’s possible your hairline can mature and then you won’t see any further loss, but I couldn’t say what your loss pattern might be just based on your age. Everyone is different.