My thoughts: Well this is one of those products you either take or leave. It’s a good idea since it’s a Lash Primer & Waterproofer in one cute package. Lets face it though…A lot of mascaras are already waterproof. I don’t find myself reaching for this product all the time, but it does work. The Primer side is white and full of fibers to help lengthen your lashes and add volume. Than just put your favorite mascara over and apply a thin coat of the waterproof side and your ready to go.