is one of the fastest growing tissues that the body makes but it
still takes at least several days if not weeks for hair growth to
be visible from hair follicles. Research in alopecia areata involves
looking at hair follicles where there is no hair fiber produced
because the hair follicle is in "suspended animation".
Such hair follicles can sometimes be released from their sleeping
state with just a single drug application.
However, even though the hair follicle immediately starts production
of a new hair fiber, it still takes at least two weeks before that
hair fiber becomes visible on the scalp surface. Where hair follicles
are in a mess, as with androgenetic alopecia, it will take several
months for the hair follicle to get its act together and start growing
fiber. Any drug that is truly effective against pattern baldness
will need some time for the results to accumulate into a noticeable