I've been using gixen as long as I can remember. I can't count how many auctions it has allowed me to win, probably close to 100 over the years. Set it and forget it. It also saves me money because I put my top amount and don't get caught up in the last minute tendencies to overpay.
I followed instructions exactly for months and saw no improvement in dark hair growth. After I stopped using it and then retried, it wouldn't recharge. It gives off a buzz but is unusable, says it's no longer activated, this was a costly mistake.