I am 24 and had wanted fuller lips for years. I liked the shape of my lips but was self conscious about my lack of volume esp in my upper lip. I had read lots of reviews on it and from what I could tell, if i didn't like it, its not like it was permenant surgery so I figured why not? I would always wonder till I did so I took the plunge!
I got 1 syringe of Juvaderm Ultra Plus mostly in my upper lip with a small amount in the lower. He did topical numbing on my lips and had me use an ice pack, then numbing injections, and then the Juvaderm. The pain was very minimal. I had some swelling (but nothing freaky looking) for about 48 hours or so and minimal bruising. The bruising was easily covered with a light lipstick.
My doctor told me he has found most results last about a year but if I got a "touch up" in 6 mos it can last about 1 1/2 years. My cost was $600 for the syringe. (if you are looking for extremely large lips, each additional syringe is $500) I only regret not having this done sooner!