To be honest, my expectations for this serum were not exactly high when I bought it. Turns out that it works better than I could've ever hoped for. First off, I have extremely sensitive eyes and this didn't cause any irritation & it also doesn't have that repulsive chemical smell to it. (Smells fairly neutral; the consistency is not to runny i.e. it doesn't drip into your eyes) After almost 3 weeks I'm convinced that my lashes are softer and longer. It might not be the miracle product for everyone but it definitely improved the appearance of my lashes. I have yet to encounter a lash serum in this price range that could compete with this product. And let's be honest, even if this doesn't work as good for you as it did for me - 5$ are absolutely worth the try.