I love this. First off the brush is very easy to use. It might seem a bit thick but it isn’t, and because it’s got that U shape you use it the use the side that’d fit the part of your lash line. I start off with the U shape and then flip it over to the curve side to reach any parts I’ve missed. There’s fibres and it’s clear so it adds length but doesn’t clump you lashes together. Also, I’ve got a mascara that doesn’t keep a curl at all despite it being waterproof, but with this on beforehand it actually stays. Also, I usually put it on, wait about 30seonds for it to feel dry when I touch it and then go with my mascara