I've been using this product for several years and the very thin brush makes it very easy to apply a thin line to outline the bottom of my eye.I have been using this eyeliner for several years now and am so happy with it. It goes on very smoothly on my 70+ year old eyes. I hope Clinique does not change the formula.Muy económico!If you don’t blink, it’s ok but it smugged on me.Lots of eyeliners end up causing my eyes to burn throughout the day. This, however, I can wear from morning to night without it burning my eyes AND it comes off easily with eye makeup remover or a dab of coconut oil. I'm not one for waterproof eyemakeup as it's hard to remove it all. So I'm a total fan of this product :) the tip stays really pointy so the precision is fire! Def would recommend.I've been applying eyeliner for over 50 years and have tried a few. Best one ever!It arrived in good order.Best liquid eye liner I’ve used.