Fillers lessen facial lines and creases as well as restore volume and fullness in the face and the lips lost as a person ages. Fillers are made of a variety of substances including hyaluronic acid (HA) which is a naturally occurring substance found in the skin and calcium hydroxylapatite (CaHA) which is also a naturally occurring substance mainly found in the bones. Poly-L-lactic acid is a biodegradable synthetic substance that stimulates collagen to smooth fine lines and help the skin rebuild collagen. Fillers are injected into the treatment area to treat the issues that the patient wants to see addressed.