I've been using PSF's Prolatogen for the last several weeks and have new eyelashes growing in - I can see the new growth. It's less expensive than Latisse and had no side effects.
Originally Posted by LoloDSM

At $65, Prolatogen is still pretty expensive. I use generic Latisse that I buy from India for $10 a bottle. I have experienced no side effects, only longer/fuller lashes.