Hair Math

So the average person has 100,000 hairs on their head and they loss 100 hairs a day. This got me thinking though, how many hairs does a person loss per year? I did the math 365 X 100= 36,500.

That’s over a third of the hair on your head that you loss per year! That’s pretty crazy to think about! So my question is how fast do those hairs grow back

You forgot something with the math — you are also growing back 100 hairs a day to counter the 100 hairs you lost. Human beings constantly lose and constantly grow hair asynchronously. You can imagine where one falls out another is growing on another area.

As for how fast an individual hair will cycle, I answered that previously here.