I get a little scared every time I use this because I'm afraid of poking my eye, and the teeth of the comb seem kind of sharp! However, it works well for separating and defining my eyelashes, which is nice because my lashes tend to stick together when I apply mascara. Using this comb after mascara helps remove the excess mascara and separate my lashes a bit. I think the difference is too subtle for anyone to see it on me, but I personally feel more satisfied with my makeup when my lashes aren't clumping.