Sebaceous hyperplasia is a harmless condition where oil glands enlarge, creating small, skin-coloured or yellowish bumps with a tiny central dimple, most commonly on the forehead and cheeks. While completely safe, ordinary skincare will not flatten them, making advanced electrolysis an effective way to smooth your skin. A tiny probe touches the bump and delivers a brief electrical current directly into the enlarged gland. This breaks down the trapped oil and shrinks the gland, allowing the spot to dry up and naturally heal into a smooth, even surface.