This product has truly been a beauty revolution for me. For the price, my expectations were high, but I would highly recommend it. I purchase expensive mascaras so this actually worked out as a savings for me because I really do not need to use much eye makeup like eyeliner anymore. That is a nice perk for me since I really could never get eyeliner right. Revitalash makes lashes darker, longer and denser. Initially I saw improvements but was not seeing real growth. However, even bare spots on my lash line filled in and within a month I was not using it every day as recommended because my lashes were TOO long - they were so long they touched my glasses when I blinked! I switched to every third day and then start using it daily again before a big event is coming up. If your eyes get irritated, try using an eye drop like Visine. It will potentially stain skin, so try to stick to just your lash line. However, you might like this side effect that a bit of darkening would happen along your lash line, almost like a permanent eye liner.