As we age, lips tend to thin, and the injection of even small volumes will create a fuller effect. Wrinkle filler may be injected to improve definition, increase fullness, or to reduce lines. Vertical lines on the top lip are best treated with tiny amounts of filler placed in the line. The concern that most people have when considering lip treatments is to maintain a natural look – the doctors at Laser Skin Care have many years experience in using fillers for lips and are committed to achieving a natural appearance.