Does a Hairline Visibly Mature?

I have an interesting question about the mature hairline:

When a hairline is “maturing” (receding of the hairline, like in your other article) , does it happen just like that (over a period of time of course) or can the person also SEE the miniaturization of the hair happening? (ex; under a bright light)

Thanks in advance

Sure, you can see and even feel the thinning miniaturized hair some of the time. Most men and women who are losing hair will comment that they notice their hair “feels” thinner in diameter and it often slows down its growth; maybe even stops growing before it falls out. The maturing hairline usually occurs prior to the age of 29 and may take as long as 10 years to appear.

For more on the maturing hairline, please see Maturation of a Hairline — Moving From Juvenile to Mature.