Lip inflation is first and foremost an excellent gloss. It is all that you would expect in a quality gloss–nice and shiny, feels moisturizing, gives a nice color tint, etc. So when coupled with its good price, I would recommend it for those reasons alone.
But Sally Hansen also managed to make a lip plumper that perhaps works a bit. So often I see nothing when I try a lip plumper. I like the tingle, so I happily buy them without any expectations and when I think I see something, then I get impressed. Lip Inflation did not get me jumping for joy the way Freeze 24/7 did, but I did think I got a tiny bit of plumping, which I can’t say for almost all other lip plumpers out there, especially not drugstore brand ones.
On a side note: Sally Hansen has been impressing me a lot lately in the lip product department. Normally people think of them for nails, but they are quickly becoming lip product specialists as well and are doing a consistently good job at it. So check them out for any of your lip product needs.