Skin boosters are cosmetic treatments that involve injecting hyaluronic acid in the skin superficially to improve the texture of the skin. Not only can skin boosters hydrate, brighten and smooth skin but they are also a very good treatment for fine lines, like those around the mouth. The hyaluronic acid in skin boosters is light weight and therefore different from that used in fillers. A course of 2-4 treatments is recommended, 2-4 weeks apart. Skin boosters can be injected in the face, neck and hands.