Here's my 2 cents...
A friend that recently got her cosmo license told me the steps to do a scalp treatment.
1. Apply cholestrol conditioner to scalp (and hair too if you want)
2. Take a brush and gently brush the scalp down to the first 2-3 inches of hair. She said boar brushes work really well. Since I don't use brushes at all, I use a small tooth comb and comb gently, working in small sections. You really want to focus on the scalp, and the feeling should be soothing, not painful.
3. Rinse cholesterol (rinsing away dandruff, buildup). Shampoo/condition OR follow up w/ a moisturizing condition, whatever you want to do. As a side note, if when you shampoo it stings a little, that means you need to be a little more gentle with your scalp. You scalp shouldn't be irritated.
4. You scalp should be clean yet conditioned.
Give this a try, I hope this helps.