Yes, but i've religiously apply every few hours-and at bedtime (just regular, not XL) and I've kept the 3mm increase I measured. Other plumpers work dramatically for an hour, burn, and go back to their previous mark on the string I have used as a measuring device. I like my fancy lipsticks, so I wear my regular lipstick, blot, and apply a nude or peach Fusion on top. I've had a lot of comments. Some were not nice. Like a tourist offered me 20. bucks to "feel my lips on his....." I was in a nurse's uniform at the time, lol. Or the thug on the bus wanting to know about my "magic lips". Women just wanted to know "what lipstick are you wearing?"
The lips are smoother because its a very emolliant formula, it really clings,and the colours are flattering. I have six colours now, they stay in perpetual use. My first tube I was skeptical about the price tag,etc. It delivered. It goes everywhere with me now. I wish it had some sort of flavour....
It doesn't have a burn or a tingle, be aware. It works with transdermal collagen ....or that is their theory.....but at least it doesn't dry the lips out. Some of the plumpers like Venom made my lips split, and dried. This makes them smooth-even the lines above the vermillion border smoothed out.