I have very sensitive eyes, plus I wear daily contacts, so finding a good, percise tip, liquid liner was impossible... Till Physicians Formula! No flaking and stays put with no irritation! Plus it actually does boost the number and thickness of your lashes with repeated usage! Love it!

The first time I bought this liner I got it In black, which looks light and greyish. But I really liked the brush tip and how it applied..so I purchased it again (on sale) in ultra black... And it's much darker. I definitely have liners that last longer, but this one is good for a quick and easy everyday look.

Even though the eyeliner was easy to apply, I found that it did not last all day during hot days. After using this product for 3 weeks, I did not notice any significant difference in the length of my lashes.

I rated a 3 for effectiveness, as I didn't see any noticeable growth in my lashes. If this were advertised as a regular eyeliner, it would have gotten a 5. I love the brush tip, the liner flows just right, and it leaves a precise black line that lasts all day, doesn't smudge, yet removes easily at night. I'm on my third one and love it!

Very expensive, but the most amazing liquid eyeliner. The tip is super precise and easy to use. The color lasts all day and doesn't smudge.

Normally I love physicians formula. This product is a great eyeliner. Very precise, stays on a long time... BUT after using it for months I have not noticed any difference in the boosting of my lashline. Let's face it, this is just plain regular eyeliner. Next time I will save myself the money and just buy regular eye liner.

I got this eyeliner in Deep Brown. I love the color of it, it is much less harsh than my typical black liners and it really highlights my eyes. I love the eyeliner. It has an almost brush-like applicator that makes it super easy to apply and it applies really smoothly. It looks like liquid eyeliner when its on, but it is about as easy to apply as pencil ones. I got it because it was almost free after coupons and deals at CVS, even though I didn't really need the "eyelash boosting" part. I can definitely tell that my eyelashes have gotten even longer though (I wish I took before and after pictures). I definitely recommend it if you want longer eyelashes, and I recommend it even if you don't really need longer lashes like I did, just because it really is a great eyeliner.