How to make short hair grow super fast?

You can't. Hair grows at a certain rate pretty much regardless of what you do. you cannot put anything on it because you hair grows from the roots not from the tip and you cannot get anything inside your head so if you actually put something on your hair to make it grow it is a waist of your time. for example if you pull you hair it hurts because you are pulling the roots, but if you hold you hair from the middle really hard with one hand and you pull the bottom part with the other hand, then it won't hurt because you are not pulling the roots.