from what I`v understood, if it`s dead then no, Dormant then yes, if it has a small super fine short hair still there then yes it should recover just fine as the folicle is still alive, just a bit poorly.

it was actually a recent discover that spiro actually works topically that inspired me try it, I`d read the others are good and are used in some medicines already, so why not stick the lot together, right!?