
If sagging along the jawline is the main worry and you cannot take time off, this is the first option.
Focusing ultrasound on a single point inside the skin creates heat there. The point that takes the heat shrinks, and as it heals new collagen forms around it, firming the layer that supports the skin from underneath. The surface is untouched, so nothing is left behind, and the change comes up slowly over 2–3 months. Because an ultrasound screen shows what is underneath, depth can be confirmed by eye.
One session lasts twelve to eighteen months. Unlike other lifting treatments done in three or four sessions, this usually finishes in one, because a single pass stimulates the deep layer sufficiently. The change comes not right after but slowly, over the two to three months in which new collagen builds.