Ultherapy for the Jawline and Neck

The jawline, submental area (under the chin) and neck are the zones most patients ask about — and submental and lateral-neck laxity is the one lower-face indication Ultherapy® (MFU-V) holds an FDA clearance for (2012). MFU-V reaches the SMAS at 4.5 mm to firm the jaw and submental tissue, with shallower depths for skin texture. Results are a gradual tightening over 8–12 weeks, lasting roughly 12–18 months. It suits mild-to-moderate laxity; heavy necks with strong platysmal bands are a surgical conversation.

A softening jawline and early neck laxity are the most common reasons patients look at non-surgical lifting. They are also where MFU-V is on its firmest regulatory footing: the device's 2012 FDA clearance is specifically for lax submental tissue and lateral-neck skin. Jawline definition typically improves as part of treating the lower face, though full-face or pure jawline lifting beyond the submental and neck indication is technically off-label — widely practised, but worth understanding accurately. The technology itself is covered on what Ultherapy is.

Why the jawline and neck are the core MFU-V zones

The lower face responds well to focused ultrasound because the target is the superficial musculoaponeurotic system (SMAS) — the fibrous layer a surgeon repositions in a facelift — which MFU-V reaches at its 4.5 mm depth. Shallower 3.0 mm and 1.5 mm depths address the dermal collagen and surface skin of the jaw and upper neck. MFU-V remains the reference standard for focused-ultrasound skin lifting^[7], and across Fitzpatrick III–VI skin its safety profile is well documented, with the few reported events resolving by day 90^[5].

Depths and zones — at a glance

What the evidence shows for the lower face and neck

The honest picture is one of meaningful but moderate improvement. A retrospective study of MFU-V for lower-face laxity — jawline irregularity, marionette lines and submental laxity — found that blinded investigators rated about 21% of subjects as improved while about 46% of the subjects rated themselves improved after a single session, a reminder that patient-felt change can outrun what a photograph captures^[1]. A narrative review of face and neck laxity treatment found around half of patients described as much or very much improved at days 30 and 90, with effects largely returning to baseline by day 360 — i.e., a result that is real but not permanent^[2]. For the neck and décolletage specifically, Korean practice often pairs focused ultrasound with a low-fluence laser to address laxity and pigmentation together^[3]. Typical single-session longevity sits around 12–18 months^[4].

When surgery is the better call

MFU-V is for mild-to-moderate laxity. A heavy, redundant neck, deep submental fullness, or prominent platysmal bands are better served by a surgical consultation; in those cases focused ultrasound can disappoint relative to expectations^[6]. The honest candidacy criteria — age, laxity grade, skin quality, contraindications — are set out on the candidates and contraindications page. If you are comparing energy with a physical implant for the jawline, see Ultherapy vs thread lift.

For how a jawline-and-neck plan is built and combined in practice, Delight Dermatology's Ultherapy treatment overview describes the consultation-led approach; recovery is covered on the aftercare and downtime page and typical costs on the pricing page.

Risks and contraindications

Ultherapy® (MFU-V) is well tolerated when performed by a trained dermatologist, but it is not risk-free. Common transient effects include redness and warmth (resolves in hours), mild swelling at 1–3 days, and occasional bruising at the jawline. Rare adverse events include temporary numbness in a specific facial zone, transient weakness of a facial muscle, small areas of skin sensitivity, and — in patients with permanent dermal filler in the focal path — focal nodules or fat atrophy. In a 52-patient open-label trial across Fitzpatrick III–VI skin, the three reported adverse events resolved by day 90 without sequelae^[5].

Absolute contraindications: pregnancy and breastfeeding, active infection in the treatment area, open wounds or recent surgical incisions in the zone, and significant immunosuppression. Relative contraindications discussed at consultation: keloid history, autoimmune skin disease, recent dermal fillers, and clinically indicated anticoagulation that cannot be safely paused.

This page is general information and does not establish suitability for any individual. That can only be decided by a qualified dermatologist who has examined the patient.

Medically reviewed by a Korean Board-Certified Dermatologist (AAD International Fellow · ASLMS member). Last reviewed 2026-06-27.