"hair grows faster when you cut it"

[ilovelonghair]

How to convince someone who believes this that this is nonsense?

I said: roots don't know the ends have been cut. That didn't do the trick.

[florenonite]

Ask them what makes them think that, then you can better tailor your response. Tell them that some people tell their kids that so that they'll cut their hair to make it manageable.

[Hypnotica]

How to convince someone who believes this that this is nonsense?

Explain to them the hardcore facts: Hair growth is regulated by your genes and not by scissors.

[Blueglass]

It's the law of diminishing returns. The shorter your hair, the more new growth is evident.

[anna1850]

I think somebody actually did do a scientific study on this to prove that it wasn't true. I heard about it on TV.

[Blueneko]

The "idea" is that if the hair is spending less "energy" repairing a damaged end, it focuses on the root.

And I like unicorns!

I have begun a routine of trims every 9 months. I do not get split ends. My growth is excellent. I only trimmed to even up my blunt ends, not because I needed it or thought it would trigger growth.

Scalp work will trigger growth. Hair is dead! Dead men tell no tales, and stuff.

[truepeacenik]

it really is: cut your hair so your splits do less damage and hair appears to grow more.

I wonder if there is a "magical amount" of trimming?
(seen the Truth commercial with the unicorn?)

[aisling]

This is only true if you have a lot of damaged ends that break off, in that case regular trims might be in order. Other than that, no, cutting your hair only makes it shorter

[ilovelonghair]

Ask them what makes them think that, then you can better tailor your response. Tell them that some people tell their kids that so that they'll cut their hair to make it manageable.

This person think that because he believes that each hair has some sort of core that is alive and attached to the root.

[*Elvina*]

I would say: invite him/her over to LHC.