i tried not combing my hair on two seperate occasions for a few weeks each. I started doing it when i noticed that my back was growing longer than the middle. As my hair is always in a ponytail, it was hair that i never combed but just gathered up with my hand. I figured i might try this to my whole head. The result from day one was immediate matting in 2 specific areas on my head. By about week 2 the only thing separating these two matted dreadlocks was a pair scissors. After the 2nd attempt of not combing and the same result, I knew it wasn't for me.