I was pleasantly surprised to see how well the eyeliner stayed on all day without flaking or fading out. The application is a bit difficult as the tip of the applicator is not what I'm used to - but I'm trying to master it. I do like a thin line, so that works for me, but I find the applicator a bit rigid and unforgiving while trying to make the line on the upper lid.

That the number one thing about this. The shades are also very complementary. I love how easy it is to apply, the water based formula makes it easier to remove (better for preserving the delicate eye area), but I have also noticed it is more susceptible to disappearing if it very hot or your skin is very oily.

Powder helps a little, but not overly much.

I was very pleased with this liner. It goes on great and has great staying power. I initially thought it was a little pricey but the bottle is a nice size. Just a note I think the green is a little lighter than the picture.

Suncoat has made a wonderful alternative for those of us who LOVE the look o fliquid liner but have too sensitive of eyes to wear synthetic junk from the drug store.
This eyeliner performs beautifully, it glides on with ease but due to i tbeing a water based formula you may have to let it "set and then do another layer to get the depth or color that you want.
This liner is one of the few that doesn't irritate my eyes :-)
The staying power is fairly good - I'v enoticed that when I do a 60's "cat eye" tail that I will need to freshen up the "wing" after around 5 hours.
If you use this for a thin line on the top lid or bottom the staying power is much better.