So I bought this.
I've heard so many people talk about 'how amazing gel eyeliner is' so I gave it a go.
This eyeliner (£8 from Topshop) was just not worth it. Although it contains a lot and the package is appealing it just does not last! It smudges off quicker than pencil and ends up all over my eyelids unless I put pale eyeshadow on. It also has the appearance of pencil eyeliner :( However, the application of it, I used a make up brush, is much easier than liquid as it dries quicker.
I feel like I only chose this because of the packaging. It won't prevent me from buying a different brand of gel eyeliner, just to see if it's the Topshop brand or gel eyeliner itself that has failed.