I have a dry scalp so I have some dandruff but it's going away because I use tea tree oil butI also have buildup on my scalp. It's super super gross to me. I HATE it. I've lloked up how to get rid of it but the some sites say to lightly condition and use less shampoo and hair product because that causes buildup,but I have dreads so none of that applies to me. I don;t know how to get rid of it. HELP!!