I've tried a lot of eyelash serums, but this one is the most satisfying in terms of value for money! I worry about pigmentation and ingredients in expensive ones that promise to lengthen your lashes like crazy, but I can use this one with confidence. After using this for about a month, I noticed that my lashes didn't fall out as easily and my lashes felt firmer and stronger, which made me very happy! My lash spa also pointed out that I had fewer lashes at the outer corners of my eyes, but now they're thicker than before! They asked me if I'd changed my lash care routine, and I like how the sponge-like tip is gentler on my lashes and easier to apply than the screw-type!