Ultherapy results: when they appear and how long they last

Some people feel lifted the moment Ultherapy is done, while others see no change two weeks later. Both are normal. Ultherapy PRIME places points of heat at set depths in the skin. Collagen contracts on the spot. New tissue builds slowly around each point, so the main effect takes months. This article covers when results appear, when to judge them, and when to repeat the treatment.

The immediate effect fades with the swelling

Focused ultrasound briefly raises the temperature at each point above 60°C (about 140°F) to form a tiny spot of coagulated tissue. Collagen in that spot contracts at once, and new collagen forms slowly afterward (Fabi 2015, PMID 25709486). So right after treatment you may feel slightly lifted and tighter. Swelling from the heat adds to the feeling. The manufacturer notes that this early plumping may fade even as collagen production continues (Merz Aesthetics 2024).

One study followed 50 people for a year after Ultherapy on the mid and lower face. Nearly all had swelling, and it settled within 2 to 14 days (Shome 2019, PMID 32537285). As the swelling goes down over this period, the tightness eases with it. That is not the treatment wearing off.

The main effect appears before two months

Around each heated point, the healing response begins right after treatment. In the same 50-person study, physicians scored improvement from 0 to 3. The first assessment came at 2 months, and the average was already 1.6. That sits between mild (1) and moderate (2), so the change must have started earlier (Shome 2019, PMID 32537285).

The main effect becomes clearer over 2 to 3 months. The manufacturer also notes that the brow, the neck, and the area under the chin continue to lift during this period (Merz Aesthetics 2024). Inside the skin, the rebuilding is still under way. In biopsies of miniature pig skin treated with Ultherapy, collagen-making cells (fibroblasts) had gathered at the heated points by day 90 and mature collagen had increased. Newly made elastin was significantly higher than on day 14 (Marquardt 2025, PMID 39545626).

By 3 months the change is clear enough to show up in blinded photo ratings. When blinded reviewers assessed 3-month photographs of 93 people treated on the lower face, they rated 58.1% as improved (Oni 2014, PMID 24990884).

Builds through six months, can last a year

In the same 50-person study, the physician score rose from 1.6 at 2 months to 2.64 at 6 months, between moderate (2) and significant (3). At one year it held at 2.60 (Shome 2019, PMID 32537285). In another study of 48 people treated on the face and neck, physicians rated 77.7% as improved at 180 days (about 6 months), and blinded reviewers 67% (Fabi 2014, PMID 24689931). The manufacturer's brochure says results improve over 3 to 6 months, can last a year or more, and vary from person to person (Merz Aesthetics 2024).

Results at one year depend on how they are judged. In a study that followed 20 people for a year, 95% still rated as improved by both the participants and the physicians. On blinded review, only 6 of the 14 people who could be evaluated counted as improved (Werschler 2016, PMID 27047630). Pooled figures from many studies carry the same limitation. A meta-analysis of 42 studies found 89% improved by investigator rating and 84% by self-report. The authors noted, though, that "neutral" answers had been counted as positive, which may overstate the effect (Amiri 2025, PMID 39540440).

Judge the result at three months, repeat yearly

At 2 to 4 weeks, the immediate effect and the swelling have faded, but the main effect is not yet clear. So the change can look small. Since the main effect becomes clear over 2 to 3 months, judge the result after 3 months. If you have an event coming, book the treatment at least 3 months ahead. If swelling is your only concern, one month ahead is enough for it to settle.

When to repeat depends on how long the effect lasts. Although results vary with how they are judged, some studies found the improvement holding at one year (Shome 2019, PMID 32537285). The manufacturer also notes that a yearly treatment can help maintain results (Merz Aesthetics 2024). We therefore repeat once a year as a rule. If sagging is progressing quickly, we bring that forward to 6 or 8 months. Expert guidelines agree, recommending shorter intervals as people get older (Fabi 2019, PMID 31141851).

For how Ultherapy works, see How Ultherapy tightens skin: focused heat at depth, guided by real-time imaging.

References

1. Fabi SG (2015). Noninvasive skin tightening: focus on new ultrasound techniques. Clin Cosmet Investig Dermatol. PMID 25709486 (opens in new window).
2. Merz Aesthetics (2024). What to expect after your signature lift: Ultherapy PRIME patient brochure (US-ULT-2400095). ultherapy.com.
3. Shome D, et al. (2019). Use of micro-focused ultrasound for skin tightening of mid and lower face. Plast Reconstr Surg Glob Open. PMID 32537285 (opens in new window).
4. Marquardt K, et al. (2025). Microfocused ultrasound with visualization induces remodeling of collagen and elastin within the skin. J Cosmet Dermatol. PMID 39545626 (opens in new window).
5. Oni G, et al. (2014). Evaluation of a microfocused ultrasound system for improving skin laxity and tightening in the lower face. Aesthet Surg J. PMID 24990884 (opens in new window).
6. Fabi SG, Goldman MP (2014). Retrospective evaluation of micro-focused ultrasound for lifting and tightening the face and neck. Dermatol Surg. PMID 24689931 (opens in new window).
7. Werschler WP, Werschler PS (2016). Long-term efficacy of micro-focused ultrasound with visualization for lifting and tightening lax facial and neck skin using a customized vectoring treatment method. J Clin Aesthet Dermatol. PMID 27047630 (opens in new window).
8. Amiri M, et al. (2025). Microfocused ultrasound with visualization (MFU-V) effectiveness and safety: a systematic review and meta-analysis. Aesthet Surg J. PMID 39540440 (opens in new window).
9. Fabi SG, et al. (2019). Optimizing patient outcomes by customizing treatment with microfocused ultrasound with visualization: gold standard consensus guidelines from an expert panel. J Drugs Dermatol. PMID 31141851 (opens in new window).