I purchased this eye liner with the Super Extend Mascara and I must say I am impressed with the way it glides on and remains smudge proof until you wash your face to get it out.
The only pet peeve I have with this product is that it finishes quickly because I got mine in January and now is it finished. So I need to make sure that every two months I buy a new one.
Otherwise this really is the best liquid eyeliner there is on the market.