raparperi wrote...
ryuuhagoku wrote...
Cutting/shaving hair doesn't actually make it grow faster, although it does sometimes give the illusion.
Hair that's never been cut has a tapered end, but successive cutting makes the ends blunter (hence making the tip of the strand thicker), giving the impression of more growth.
Umm, dunno about you, but my hair does grow faster when its cut D: I usually dont get my hair cut very often, so usually when I do, my hair is loooong, like almost to my lower back. And when I cut it, I cut it quite short, usually almost to shoulder length. You know what happens after that? My hair grows fucking fast! D: And usually around the time it reaches the middle of my shoulder blades it starts to slow down.
So, how do you explain that? :<
[size=4]I actually came up with an explanation, but I'm not gonna say it after writing that much D:[/h]
Okay, I should have clarified that what I wrote pertains specifically to androgenic hair (facial, underarm, groin and more visible body hair). Head hair and vellus, the light body hair that covers almost all of a human's skin from birth, don't always behave the same way.
I tried putting into words what I think might be the case with longer head hair, but I didn't succeed.
Instead, I came up with this: G = F + E
G is your perceived total hair growth rate.
F is the rate at the follicle.
E is the rate at the ends.
All of the science I've seen on this says that F is constant. I think that as hair is exposed to the end, it compacts, thus giving E a negative value. Cutting hair suddenly increases E to 0, as it exposes un-compacted hair. Over time, this newly exposed hair begins to compact, reducing the net growth rate, G.
Just my hunch, though. What was your idea?