I would like to know if a derma roller on the scalp helps penetrate Folligen Solution, emu oil etc. for hair thickness and growth. If so, what is the correct needle length.
13 February 2014, 10:56 AM
Dr. Pickart
But some people use dermarollers on hair plus the products and tell use their hair looks better.This message has been edited. Last edited by: Skin Biology,