Hylaform is a hyaluronic acid-based product used in the temporary treatment of facial wrinkles. Hyaluronic acid is a natural substance present in all living cells throughout the body and helps maintain skin volume. Injected just below the surface of the skin, the products add volume to the skin, smoothing unwanted lines and wrinkles. The body naturally absorbs Hylaform over time. No skin test is necessary before treatment and immediate results can be seen. Hylaform was FDA-approved in 2004 for injection into the mid to deep dermis for correction of moderate to severe facial wrinkles and folds (such as nasolabial folds). Hylaform Plus, with its larger gel molecules, was FDA-approved for the correction of moderate to severe facial wrinkles and folds.