These are natural, flexible substances that can smooth out wrinkles and frown lines. They are also used to make lips more plump, fill cheeks that are hollow, reduce scars, and fill up deep folds.They are sometimes used to create a "liquid facelift". We pride ourselves on helping you look natural and restoring the volume you once had in these areas. Hyaluronic acid is a substance that is naturally present in the human body. The hyaluronic acid that is used as medicine is made in the laboratory and behaves bio-identically when injected.