Tear trough filler involves using hyaluronic acid to eliminate undesirable features like under-eye bruises, dark circles, puffiness, and redness that affect the look of the eyelids, thereby revitalizing the skin. The hyaluronic acid injected into the under-eye hollows enhances skin hydration, volume, and texture. This treatment effectively diminishes the appearance of dark circles, bags, or hollows under the eyes, resulting in a more even and radiant complexion.