This is actually a realli good primer for your lips. I have realli dark lips and using this helps make the color of the lip/gloss/stick go on truer. It says it's a plumping product, but it does absolutely nothing to plump the lips.
It's a good alternative to concealer/foundation on your lips cuz it's safer ... but a lil on the pricey side. 1 tube does seem to last quite a long time though