Is Ondari Lifting effective for jawline management?

Hello. Recently, whenever I take photos, I am concerned because my jawline looks duller than before and my face appears slightly larger. I haven't experienced much weight change, but I am self-conscious only about the lower part of my face, so I am looking into lifting procedures. I am wondering if On-Da Lifting helps improve both fat and skin elasticity. Can On-Da Lifting also help to smooth out the area under the chin or areas that look like a double chin? I would also like to know if there is a difference between treating the entire face and selectively treating only the areas of concern. I would also like to know if the clinic provides guidance during the consultation regarding the typical number of sessions required for first-time On-Da Lifting.