I love a good liquid liner pen, I find them so much easier to use. I like this pen but I wouldn't say it's lived up to the hype I heard about it.
I really like the applicator tip on this pen, it's not too big, nor too small. It applies the product evenly and doesn't drag. It dries quickly too. I don't find its overly black or pigmented, I do find myself doing a 2nd coat. I also don't find it stays all day, I get smudging too on hot days which doesn't impress me. It's very easily removed.
I do tend to have quite oily lids so this might be why I don't find it as long lasting. I think I'll be going back to my Maybelline pen.
Stila's eyeliner formulation is great and the colour is super matte black and opaque. However the tip is not, the liner material will separate and start falling out as tiny hair bits. Because of this when the formula starts drying inside the liner the liquid won't go into the tip which sucks because this liner is not cheap and mainly because its selling point is drawing precise lines. My liner dried out pretty fast too, honestly.
Tips: If you are not a makeup junkie like myself who constantly repurchases makeup do not buy this and expect it to last. Buy this product if you are someone who does liner frequently so you can use it up before it dries and get your moneys' worth.