I had the same problem with itchy scalp and dandruff.  I also bought the organix south brand from an online retailer and it is doing a great job of controlling my dandruff.  I like that it has no chemical additives.  I leave the shampoo in for 5 minutes before rinsing then I use the conditioner and leave it in for 5 minutes before rinsing.  After 2 days fantastic improvement, now my head does not itch and not enough flakes to be noticable.  I buy the organix south products from neem king.  They are a retailer but it is cheaper than anywhere else I have found even organix own website. I am now a neem believer!  I also bought a book that has neem remedies in it and it is crazy how many uses it has.  I wonder if it can cure scatterbrains?