The packaging: I love Topshop Beauty's packaging in general and this product was no exception. It's simple and stylish. I do have one somewhat strange complaint which is that the lid doesn't make a satisfying click when you put it back on.
The application: The brush is like a long marker pen which I found pretty tricky to use at first. The length made me feel like I didn't have the most control over it. I think it just depends on what you're used to though, I could imagine some people really liking this. The tip is really thin so once I got the hang of it, I could be more precise. It's also great for drawing wings.
The colour: I got Engraved which is black.
The road test: The first time I wore it, I came home with faint black smudges trailing down the sides of my eyes. So much for first impressions. However, I've been using it with my Etude House Proof 10 Eye Primer which has kept it in place for longer. Also, it should be noted that this thing isn't waterproof.
Overall: Sadly, this liner wasn't so magical for me. For reference, my eyelids do get oily so I think that probably worked against this liner. This product usually gets great reviews so it may work better for you. If you like marker-like applicators and like to draw thin, precise lines, then I'd say check this out. However, if you normally struggle with finding long-lasting liners like I do, check out K-Palette.