I don't want to rain on anyones parade, but one my suite-mates in college tried the "FinallyFree" system and got marginal results. She had one of her friends try it as well, and she only got marginal results as well. Between the two, they had very different hair colors/types/thicknesses, so it was a pretty good trial, if you ask me.
Seems like a product that could be improved upon though!