First impressions were actually pretty good. The packaging is sturdy but light. The cap sits firmly on the tip of the eyeliner, so you don't have to worry about it flying off in your make-up bag and everything getting covered in black gunk. I'm also quite fond of the silver writing on black plastic; it looks a lot more expensive than you would expect.
As you can see from the swatch picture, the pigment isn't quite as black as it could be, so I found myself applying a few layers to get better pigmentation, as I do like my eyeliners to be "proper black".
On the plus side, once this is on the skin it stays on. I found myself wearing this on 16-hour work days and when I struggled into the bathroom at the end of the day it was still there, exactly the same way it had been at the start of my day. Due to the longevity it does take a bit of work to remove, but nothing a good make-up remover cannot handle.
The only other downside? After about three weeks of almost continuous use, the Extreme Felt Eyeliner decided it had enough and dried out completely on me. But for £1 it's not like you can't afford to buy another. So, short life span aside, I am really, really impressed with this product. I honestly cannot believe that you could get something this good for a single pound, when I'm used to paying at least ten times the amount MUA charge for most of their make-up.
I've since gone back and purchased a few more of their items and it's starting to develop into a full blown addiction now.
What's your favourite bargain product?