My 14 year old has oily scalp and curly hair. I had her on some high powered shampoo to try to fix the oily. Last week my girls and I started CG/mod-CG. Due to her oily scalp I had her use a L'Oreal sulfate-free shampoo instead of co-washing, and then Tresemme Naturals conditioner. I noticed a difference immediately for her. She has gone 3 days between washings and still her roots are not greasy. She is having the best results of the three of us. She pretty much just runs her fingers through her hair in the morning and she is good. I am most happy about the lack of oiliness and hope that helps her forehead clear up soon too.