mulder said:
What's the best method of hydrating your scalp for the best possible topical absorption?
Well, the BEST POSSIBLE method would be to thoroughly shampoo your scalp, which would serve the dual functions of completely hydrating your scalp, and cleansing it of dirt/oil/sebum which might serve as a barrier to the subsequent absorption of hairloss topicals, especially water-soluble ones like EGCG.
However, applying an EGCG topical to your scalp in the manner I described previously does make you smell strongly of green tea, so it's not something you'd want to do and then go out in public. When I used to experiment with it, I'd thoroughly wet my scalp separately, then apply the EGCG topical, then wait for as long as I could while doing other things (watch TV, post on the Internet, read the paper, whatever), then jump in the shower after at least an hour or so and shampoo it all off.
mulder said:
I would assume having the entire scalp moist but not soaking wet is preferable...
Well, I'd get my scalp pretty damned wet for a period of time, but then let it dry to a "moist" level just prior to aplying my GTE solution.
mulder said:
also the hotter the better?
Probably. In fact, when I was doing that, I'd keep my scalp wet/moist by spraying it periodically with water from a plastic bottle with a spray-pump on it. Usually I'd keep it warm by nuking it a little in the microwave (be sure and remove the pump-spray first before microwaving the bottle, because they contain metal springs).
mulder said:
How long should the scalp be moist before you should apply the topical? etc.
Dunno for sure, but I always tried to keep it wet/moist for at least 10-15 minutes or so. Shampooing, though, ought to work faster than that, I would imagine...