I once asked a friend if she was wearing false lashes (they looked amazing) and she told me that while people kept asking her that, she was actually just using this new product called "fLash"...I went out and bought it immediately!
I've since repurchased this product twice. Each time I've noticed a difference within one week of using. It makes my lashes significantly longer and curled; I have to be careful applying mascara not to smudge it onto my lid! Personally I don't notice my lashes getting any thicker, and don't think this product will ever give you a full "falsies" effect, but it will enhance your natural look.