Search:

My protocol has been posted, and the experiment starts in a week's time (piloting of new prep routine starts today.)
...

An absolute measure of prep (or an absolute time limit on edges) is not going to work for the reasons you mention, for sure. But relative prep should be OK, as in "an amount of prep that adequately...

I feel an experiment coming on.... :)

I take your point Jimmy - everything plays a role, undoubtedly. For me it is a matter of degrees. If, other things being held constant, better prep can extend...

Well again, I can only go off personal experience. I do not consider what I do to be serious prep - just a quick splash or two of hot water and then lather. Although, I do let the lather sit on my...