Not sure quite why, but when I first heard about Lash Genius I had a bit of a, "Yeah right!!" reaction, it just felt a little extraneous to an already burgeoning make up bag. But what makes this so effective is the fact that this is the product's one function, it's clear, glossing and it coats your lash so no moisture permeates. It can be a bit of an effort to get off but if you need to rely on your make up staying in place through thick & thin, this is 'the one'! The Astalift Cleansing Oil removes it, and anything other make up you are wearing pretty easily.