Best eyelash serum

[Userr19037]

I've tried revitalash and was very impressed but it's obviously expensive so I wondered if anyone had good results with cheaper brands?

I've been using RapidLash on and off for a couple of years. It seems to take 3 - 4 months to work and then Bam! long beautiful lashes. But after about a year it seems to stop working so I take a break for a few months.