I have tried so many lip plumpers that don't work that I started this one with no faith. But it's absolutely amazing. It noticely plumped my lips without irritation and the sting wasn't bad at all. You definitely feel it, but for me it didn't hurt. It has a spicy peppermint scent that's very yummy and it's extremely shiny and not sticky at all. The tube is very small but it lasts a while - and I apply it every twenty minutes, usually. It also smoothed my lips better than chapstick does. Definitely my favorite lip product!