- Apply just as much as is needed to cover the scalp. If your hair is still "wet" from the stuff then you've probably applied too much
- Don't apply just before you go to bed or just after you have got up. Let your body wake up a bit first (because the blood is rushing all over the place since you spent the last 7 or so hours lying down)
- As above, don't apply to a wet scalp.
I am trying to get out of the habit of number 2.