The lips have always been an eye-catcher in the middle of the face. Nothing for nothing is dedicated to them the cosmetics industry with numerous products, such as lipstick, contour lift, just to name a few.
Collagen, own fat or hyaluronic acid to inject into the lips are sufficiently well known and effective to give the lips not only volume but also a new shape.
A disadvantage of these methods is the limited effect or duration of the result full of lips. Why is this so?