Primark PS Love Lip Liner Dark Pink 09 is allegedly a dupe for MAC Whirl / Soar which are constantly sold out. This was a fraction of the price at £1.50. I don't own any MAC products so I can't compare the two but I am sure there are others who have done that already.
Dark Pink 09 is a mauve shade with a hint of brown in there.
The formula is quite waxy but this helps it to stay put on the lips.
While it looks like it is a wind up liner it is a pencil which needs sharpening.
It is very similar to my natural lip colour and I like wearing it alone to even out the pigmentation. It is very similar to ELF Fiery Fuchsia.