The jawline shapes the lower face and the profile. A dense hyaluronic acid, placed by cannula along the edge of the jaw and at its angle, sharpens its contour — to give structure to a profile, correct an asymmetry, or support a lower face that is starting to slacken. The design follows the proportions of each face: the line sought is not the same in a woman and in a man. The limit is clear: this procedure does not replace a facelift. It suits slight laxity, not marked laxity — in which case the examination points towards other options, up to and including surgery.