KOJI dolly wink liquid eyeliner review

Many people have been raving about this product lately, and I've had my eye on it for a while.  Earlier today I went to a local Asian supermarket and purchased Koji's Dolly Wink Liquid Eyeliner, a collaboration from the Popteen model, Tsubasa Masuwaka and Koji.    I purchased this eyeliner in "Deep Black".

Original Packaging; US$16



I really like the packaging for this product, especially the bow part on top where you open to take the eyeliner out.  The packaging really has that gyaru kind of feel to it.

The eyeliner in its pink and purple glory.

Felt tip eyeliner

Again, very cute and "dolly-like" hence the brand, Dolly Wink.  Typical eyeliner size.  This eyeliner has a felt tip, which I absolutely love, as it allows for easy application.  It's very much like the VOX liquid pen eyeliner (Korean brand) I currently use, except for this eyeliner, it's more concentrated and doesn't run as easily as the VOX one.

Koji's Dolly Wink Liquid Eyeliner claims to have :

"ultra fine yet flexible point tip, which allow greater precision with a easy to handle eyelining experience [...] This eyeliner is waterproof, sweat proof and with the quick dry formula, the eyeliner can stay on for hours without a smudge. Your look will be long wearing and gorgeous even without touch-up. " - Sasa.com

From my experience, I found that their claims are pretty much true to an extent.  The felt tip is very fine and flexible so it's easy to use, even for a beginner like myself. 
Waterproof? Yes, but to an extent.  I'm sure that if you ran under a sprinkler, it wouldn't wash off, but if you rub at it under water, it will. 
I'm not sure about being sweat proof, since I don't really sweat that much during the winter.  I'll probably update this when time comes.
Dries very quickly.

In short, I am pretty impressed with this product, and I'm sure I will buy this again in the future.