This product worked beautifully. I like to wear multiple coats of mascara, but no not like it if they are all waterproof. I need a waterproof mascara because I have watery eyes. This product is a clear topcoat that does what it says. You just have to be careful to really coat your lashes. It didn't alter the mascara I had under it, it just added a waterproof topcoat. I loved it!