I have had the Juviderm injections twice in the past few years. I currently have none in my lips now. I had 0.8 mls both times. In my experience it lasted a lot longer than 6 months. Almost a year. The first few months they are at their biggest and plumpest. The procedure itself hurt but it was not unbearable. Although they use an anasthetic you can feel the product going into the corner of the lips. I was fully recovered within 2-3 days (you are not meant to drink coffee/hot foods the first few days). They look and feel very natural. Highly reccomend to anyone wanting a boost.