ThriftyFun is one of the longest running frugal living communities on the Internet. These are archives of older discussions.
I have a 12 year old daughter with long hair that is greasy the next day after she washes it. We have tried stopping all conditioners and even washing her hair with Head and Shoulders.
My handicapped sister has hair that is far more oily than any I have ever seen or heard of. It's a terrible problem and even washing every day doesn't help much.