Hey - To be more specific, I never really got my hair cut in layers, that is just how my hair grew in when I did the big chop. I just trim my hair the way it grows in so I never really tried to even it out. My hair grows faster in the back and middle, and slower on the sides. Yes layers do take a while to grow out, I just never really tried to even out my hair. I take MSM & an EFA. Sometimes I take a b-complex. They use salerm-21 as a leave in - oh I forgot - I also use jojoba oil as a leave-in, but I use kemi oyl for the rest of the week.