Unfortunately, too many people are walking around with over-filled or improperly filled lips. When I perform lip augmentation, it's like you applying lipstick. First the border of the lips are filled, your "lip liner." Next we fill in the body of the lip or your "lipstick." Each person needs to be treated as an individual and different amounts are used to get a natural result. One hard and fast rule is that the lower lip should always be 1 1/2 to 2 times the size of the upper lip, so rarely do I fill just the upper lip, even though I'm often asked.
For a young person, usually one cc if filler, either Juvederm or Restylane is used. For mature ladies looking to restore a natural cupid's bow or a beginner who is worried about looking too big we start with 1/2cc. Costs vary by region and city.