Simple Info - How fast does the hair grow?

Moshi-moshi, minna! 
Now, Usami will give the "Simple Info" !

How fast does the hair grow?

The hair growth of everybody is different. Do you know it? 

When it is long, your hair grows slower (one and a half times) than when it is short. What mother says is true. 

“If you wish long hair, cut it.”

LOL. Isn't that right? I think it's true. When Usami have a long hair, my hair rather slowly growing. But, my mistake too. I am not good for taking care of my long hair. Ne.. Usami is a troublesome. (‿ , ‿”) Kawaisou..