Keiron, do you take a Flaxseed Oil supplement? That might help with dry scalp. Otherwise here's a link to a shampoo from a line that someone recommended not too long ago,
Rene Furterer , supposed to be good for dry scalp. They've got a leave-in too but since your aim is to heal your scalp to the point of making do without any applications, I thought the shampoo might be better. That way, your scalp will "remember" how to produce it's own lubrication. Methinks applying grease and the like not only clogs our pores but also gives the scalp the impression that it can kick back and quit doing its normal "job" since we will "cover for it". Like Shinka says, give your scalp time to realize "vacation is over" and that no one's willing to support its lazy habit. Soon it'll get the hint and start producing serum like it's supposed to do.