Ultrasound lifting, threads and tightening: what to expect and when

Lifting without surgery is the part of aesthetic medicine where the marketing runs furthest ahead of the mirror. A device passes over the jaw, nothing visible happens, and the reader is told to wait three months.

Threads go in under local anesthetic and the face looks lifted that afternoon, then looks different again a week later. Readers write to us confused about which change was the treatment and which was the swelling.

This section takes the tightening questions in order: when results appear, how many sessions matter, how ultrasound differs from radiofrequency, whether threads can be undone, and who the treatments suit.

The desk's starting point is that "lifting" covers two different mechanisms. Energy devices heat tissue to provoke new collagen over months. Threads mechanically reposition tissue and then dissolve.

They are compared as if they were one thing, and they are not.

When the details conflict, start with the mechanism. An ultrasound device delivers focused heat at set depths below the surface; the change comes from collagen the body builds afterwards, so results are slow and modest.

Radiofrequency heats a broader volume at shallower depth. A thread lift places dissolvable sutures under the skin to hold tissue in a new position while the body reacts around them.

Each has a different timeline, a different risk list and a different ceiling. A consultation that recommends one without naming the mechanism has skipped a step.

The second thing to settle is candidacy, and here the honest answer disappoints some readers. Energy devices do their best work on mild to moderate laxity in skin that still has some spring.

Heavy descent, very thin skin or a lot of loose tissue under the chin are usually surgical questions, and a good injector will say so. A reader told that any device will lift any face has been told something the published evidence does not support.

Third, the practical side. These treatments are sold in packages and often to readers who travel for them, which leaves no room for the two-week review that catches most early problems. Plan the review visit before the treatment, not after.

Finally, the license question applies here as much as to injectables. In California these treatments are the practice of medicine under the Medical Board of California's published position, performed by a physician or by a registered nurse, nurse practitioner or physician assistant under physician supervision.

The person holding the handpiece should be able to say which of those they are.

Readers also ask what the treatments feel like. Ultrasound is a hot, sharp pulse along the jaw; radiofrequency is a building warmth; threads are a local anesthetic and a pulling sensation, then a week of tenderness.