I put it on at 10 in the morning and 12 hours later, at 10 at night, my eyelashes are still on point. The brush is a bit big for my eyes (which are a bit small and hooded) and because I'm slightly clumsy, I tend to smudge easily. It doesn't provide the best separation and it's hard to remove since it's waterproof, but if you want to lift them up, it will do the job. Note that I have thin, medium-length lashes that are straight in the middle and downward at the outer corners. I have used the mascara with and without a lash curler, and it truly delivers maximum results. If you use it with the eyebrow brush for the brows, you will definitely have killer lashes! :D