I have used the Revian red for about 1 month. I just happen to go to my hairdresser 1week ago and she did mention I had a lot of baby fine hairs growing. The cons so far are 1. The cap is big and has to fit somewhat snug to work.They do add some foam pads
But they are cheaply made and come off very easily.
2. Trying to get help is difficult. I have tried a couple of times to get the to send me some new pads I am still waiting.
3.It is costly.