It does tingle a bit the first time you put it on, but that is normal and what causes your lips to plump. I've tried other lip plumping products and this always occurs. My lips did get a little bit plumper, but it was a fairly mild change. The lip plumper does a really nice job at moisturizing your lips and gives your lips a nice glossy look, which also helps your lips looking more voluptuous.
I do think the price is a little bit high, given the fact that most of the other lip plumping products I've tried were between 7-12$, but they did not have the additional moisturizing and glossy effect to them, so I guess it depends what you want! Also, I don't want my lips looking huge and unnatural/swollen, so I am happy the effect looked more natural. It did feel nice on my lips after the stinging/tingling subsided and my lips were slightly fuller after (due to the tingling and the glossy lip effect). Just things to keep in mind if you are considering purchasing it!
Want to check this out for yourself? Here is the Amazon product link:
*I received this product in exchange for my honest and unbiased review*