R.C.
My youngest son had the exact same problem.The hairstylist said he wasn't washing it well AND he wasn't getting ALL of the shampoo out.Also it seemed to get better in the summer because of the shorter cut and the ease for him to wash it better.Now though,he has a problem with dry scalp and the pharmacist recommended 'Dermarest',its a psoriasis shampoo and works extremely well.We get it at Walmart,but I think you can get it at Walgreens and CVS,its not cheap,but they don't have to use a lot and it runs about 6.95 a bottle(8 oz)and has a pretty generic looking label-red and white.I was told and have seen articles that say you should absolutely NOT use dandriff shampoos,of course since they were cheaper,we did try them,but to NO avail.Hope this helped,R.