It is pretty expensive for an eyeliner but it does do as promised - stays all day! I have applied this in the morning and had it still look fresh by the end of the day. No smudges, running and no "raccoon" eyes either.
It is very pigmented, you only need to apply once to get a good amount of product on your lid. The black also stays looking "wet" even though it has dried, it doesn't flake or feel heavy.
It's very easy and smooth to apply, the tip is small and you can get a really precise line and it's easy to go over and get thicker line if you wanted. I do agree with some of the other reviews, the tip does fray fast but for me, when the tip started to go I was pretty much out of product already and it was beginning to look more dark gray than black. I also had no problems with removal but I do use higher-end removers, so maybe you would need to get a really good remover to dodge any troubles during removal and avoid any possible irritations and excess rubbing.

Very smooth application, pretty decent precision. Rich black colour. Long lasting colour with no fading or cracking. I would buy this again but I still prefer Kat Von D products.

The felt pen degrades after awhile of wear and tear, but that's par the course of eyeliner abuse I bring to the court everyday for winged eyeliner. Stila's a fantastic eyeliner that i've had the luxury of purchasing after failed drugstore brands that washed out into corpse grey lines and dissolved into dust after the first usage. Definitely buy this eyeliner! It lasted me easily almost a year and the lines are crisp and black. SORT-OF waterproof, but juuust enough that if you don't rub your eyes in the rain, we're good.

This is my GO TO eyeliner! It may be one of the more expensive brands, but that just means that you're paying for QUALITY! Not only does the product itself last a few months before running out (and I wear nearly every day), but it is also long lasting, TRUE waterproof wear. Heck, you gotta scrub this stuff off your eyes to get it off at night, you could cry a river so deep Adele will be rolling in it and your wings will still be ON POINT! Speaking of on point, the brush tip is a dream and makes those thin precision lines so much easier. Say goodbye to eye poking and raccoon eyes, this will be your new BFF like it's mine.

Taking my 5 yr. old grandson swimming has always been a test for my liquid eyeliner. I have tried several brands, some of them very expensive but invariably find black streaks running down my eyes in the pool. Of course he laughs at it BUT I don't. I never leave the house without makeup and now STILA STAY ALL DAY WATERPROOF LIQUID EYE LINER has fulfilled my dream of finding a non-running eye liner. Thank you! Great bargain for this efficient product.

I love Stila Stay All Day! It actually stays on ALL DAY and is easy to remove at the end of the day! What's not to love? Well, other than the price of course. Yikes!
It's still my go to and will probably continue using it until something better (and cheaper!) comes along.

I feel like the price could be improved upon, but saying that, there is no drugstore dupe that measures up. Consistent application, great lifespan, and really does not budge all day. Nothing else compares. This is the only liquid eyeliner anyone will ever need!

My favourite eye liner of all time. Goes on smooth and has a perfect cat eye tip, stays on all day (sometimes have to fix a bit on the corners after the gym) and comes off with water and face wash, no need for make up remover. Keep buying it over and over.

Although the price is a bit costly (retails around $27), it is one of the most amazing liquid liners! The pen itself is very easy to use - allows you to create a thin or thick wing. The product itself dries fairly quickly, doesn't smudge, and seems to last all day. It is HIGHLY pigmented, and dries rather matte. Love Stila products - would definitely recommend!

I have greasy eyelids and this truly does stay all day on my lids with no transfer or smudging, I cannot stand it if an eyeliner transfers into my crease. It makes winged eyeliner a breeze and the felt tip applicator does not fray or split. Yes there are other inexpensive eyeliners out there but the quality and long wear formula of this product justify the splurge. I also love the fact that even though it's waterproof it comes off nicely with my face wash or makeup remover with a gentle wipe.