Unlike liquid eyeliner pens and other gel eyeliners, this Tarte liner STAYS on your lid and does not smudge! It's waterproof, so one expects the product to stay on, which it does! There's no scent to the liner which I like, and I love how the liner is very creamy. It dries quickly once applied, and it is very easy to apply with a brush.
My only concern is in the case where I grab too much product on my brush. If this is the case, the liner dries up on your brush and hardens. I recommend spot cleaning your brush after every use until you deep clean your brushes.
Overall I LOVE this liner, and I will splurge and purchase it again. The quality is great, and I'm a girl that wears eye liner on the daily!