Hyaluronic acid is a naturally occurring complex sugar molecule that forms large matrices in the connective tissue of the body, such as skin and cartilage. Much like a sponge, its primary function is to bind and absorb water molecules, which creates volume in the face. Hyaluronic acid fillers are generally used to treat facial wrinkles and folds and to enhance the appearance of the lips. One of the fastest growing dermal filler treatments available, hyaluronic acid fillers work by replacing the hyaluronic acid in the body that has depleted over time, which restores the volume beneath the skin`s surface. Using an ultra fine needle, hyaluronic acid is injected into the dermis at several points along the edge of the treatment area.