Hyaluronic acid is a substance that occurs naturally in the body, found in the skin, joints, and connective tissue. Its role is to attract and retain moisture, keeping tissue plump and hydrated. As we age, natural HA levels in the skin decline, contributing to volume loss, sagging, and the deepening of lines and folds.

When injected into targeted areas of the face, hyaluronic acid dermal fillers are understood to add volume beneath the skin and attract moisture from surrounding tissue. This may help to smooth lines, lift contours, and restore a more defined facial structure.

While both hyaluronic acid fillers and surgical facelifts aim to address signs of facial ageing, they differ significantly in approach and recovery. A surgical facelift involves the repositioning of skin and underlying tissue through incisions, requiring general anaesthesia and a significant recovery period. HA facial fillers, by contrast, are non–surgical, administered through fine injections, though some temporary effects such as swelling may be expected following treatment. Also, hyaluronic acid fillers can be dissolved using an enzyme called hyaluronidase if needed.