Energy-based lifting: how many sessions do the data support?

Standard protocols for microfocused ultrasound with visualization (MFU-V) are completed in a single session [2]. Yet the question patients ask most often, and the one clinics answer most variably, is how many treatments they should expect. The published evidence on that question is thinner than the confidence with which it is usually answered. One retrospective study found that a median of 4.3 months after a single treatment, blinded investigators rated 62.5 percent of patients as unchanged, while patients rated themselves considerably better than the investigators did [1]. A multi-session protocol averaging four treatments described itself as noninferior to the single-session standard, not superior to it [2]. This article reviews what the data support about session count, combination, and expectation. It is not medical advice.

What the standard protocol actually is

The device protocols for MFU-V deliver treatment lines at set depths in one visit. When two clinicians published an alternative in 2023, delivering the same pan-facial treatment as a series of shorter, more intense visits, they opened by stating the baseline plainly: standard protocols are completed in a single session, and their motivation was that the single long session presented barriers to entry for a significant number of patients [2].

That framing matters for reading any repeat-treatment recommendation. Repetition is not the protocol; it is a departure from it, and the burden of evidence sits with the departure.

What one session produces, measured rather than impressed

A retrospective study of 24 patients treated on the lower face is the most sobering data point in this review. Patients were assessed a median of 4.3 months after one MFU-V session using paired pre-treatment and post-treatment photographs, rated by two blinded dermatologists on the Investigator Global Aesthetic Improvement Scale and by patients on the subject version [1].

The difference between investigator and patient ratings was statistically significant (P = 0.006), with investigators scoring lower [1]. No serious adverse effects occurred.

The authors' own interpretation is worth quoting in substance: the gap suggested to them that photography-based assessment may not capture what patients perceive, and that better evaluation methods are needed [1]. That reading is fair, and it cuts both ways. Either photographs miss a real change, or patient self-assessment reflects expectation as well as outcome. Both possibilities are live, and neither supports selling a fixed course of repeat treatments on the assumption that more sessions accumulate visible benefit.

This was a single-centre retrospective study of 24 patients with one device, so it does not settle the question either. It does establish that a single session frequently produces no change that a blinded assessor can see.

Repeating the treatment: what has been tested

The multi-session protocol published in 2023 enrolled 12 participants with mild-to-moderate skin and fibromuscular laxity, each receiving one superficial and one deep pass per visit, averaging around 280 lines. Two were excluded after substantial weight gain, leaving 10 patients who underwent an average of four treatments [2].

Reported outcomes were positive: mean brow height increased by 1.7 mm, all patients and treating physicians rated an improvement in appearance, and independent physicians rated improvement in 87 percent of cases. Adverse events were transient, including superficial welts in five patients, and none were severe or permanent [2].

The conclusion the authors drew, however, was that the protocol was noninferior to standard single-session protocols [2]. Noninferiority is a claim that something is not meaningfully worse, not that it is better. Combined with an uncontrolled design, 10 analysed patients, a single practice setting, and follow-up delayed by pandemic scheduling, this supports the multi-session approach as a viable alternative for patients who cannot tolerate one long session. It does not establish that four treatments outperform one.

A case series in a different anatomical setting reported that patients with Grade 3 chest and gluteal laxity improved by 2 grade points after two or three treatment sessions, but those sessions also increased the tissue layers treated and added a filler component, so session count is confounded with treatment intensity [5].

Combining in one visit has better evidence than repeating across visits

The strongest design in this review tested combination rather than repetition. A prospective, randomized, split-face study enrolled 26 patients with facial laxity. Every patient received one full-face MFU treatment, and one randomly assigned side additionally received microneedle fractional radiofrequency on the same day [3].

At 3 months, the combined side outperformed the control side on the Global Aesthetic Improvement Scale and the Wrinkle Severity Rating Scale. Imaging showed a significant reduction in subcutaneous fat thickness on the combined side, particularly at the masseter and mid-cheek, and over 90 percent of participants reported satisfaction. Side effects were mild and transient: erythema, purpura, and edema, all resolving without intervention [3].

Split-face randomization is a strong control for individual variation, which is what makes this the most informative trial here, though it remains a single 26-patient study with 3-month follow-up.

A separate single-session combination approach has been tested off the face. In a prospective single-arm pilot of 12 women with upper-arm laxity, MFU-V followed by subdermal diluted or hyperdiluted calcium hydroxylapatite in one session produced significant improvement in cutometer measures of firmness and elasticity, sustained to 24 weeks [4]. A pilot study with no control arm establishes feasibility rather than comparative benefit.

The pattern across these studies is consistent: what is supported is treating more layers or more mechanisms within a visit, not simply returning for the same treatment again. Our comparison of energy-based lifting devices covers how the modalities differ, and the MFU-V evidence review and monopolar radiofrequency review cover each in depth.

Korean clinical practice patterns

Korean dermatology practices treat a high volume of energy-based lifting, and several Seoul-based practices, including Delight Dermatology Clinic in Gangnam, Apgujeong Oracle Dermatology Center, and Leaders Dermatology Clinic, have described treatment planning built around assessment at intervals rather than a pre-sold course of sessions. The common elements described publicly are:

• Baseline assessment of laxity severity and tissue thickness before the first treatment, rather than a package selected in advance.
• Reassessment at 3 to 6 months, the window in which collagen remodelling changes are expected to be measurable.
• Same-visit combination where indicated, matching the direction of the split-face evidence [3].

Disclosure: Dr. SangYoul Yun, who medically reviews DermatologyNews articles, practices at Delight Dermatology Clinic. Multiple Seoul practices are referenced to provide balanced clinical context, and the editorial selection reflects publicly documented practice patterns rather than promotional intent. No clinic named here funded or reviewed this article's evidence selection.

Adverse events, limitations, and realistic expectations

• Every study here is small. Sample sizes were 24, 10, 26, 12, and 4 patients. None was powered to detect modest differences between session counts.
• Only one used randomization. The split-face combination study is randomized; the rest are retrospective, single-arm, or case series [1][2][4][5].
• No study compared one session against several with blinded assessment. The central question of this article has not been directly tested.
• Follow-up is short. The longest structured follow-up here is 6 months [4], against a treatment marketed on collagen remodelling that unfolds over a longer horizon.
• Assessment method changes the answer. Blinded photographic rating and patient self-rating diverged significantly in the study that measured both [1].
• Adverse effects are usually transient but real. Reported events include erythema, purpura, edema, superficial welts, tenderness, and mild bruising, resolving within days [2][3].
• Body sites are not face data. Chest, buttock, and upper-arm findings do not transfer to facial treatment planning [4][5].
• Device and operator differ between studies. MFU-V is not one fixed intervention, and transducer selection, line count, and depth vary between the protocols described here.

Bottom line

The standard MFU-V protocol is a single session [2]. Repeating it is common practice but weakly evidenced: the one published multi-session protocol claimed noninferiority to the single-session standard from an uncontrolled series of 10 patients [2]. Meanwhile, a single session frequently produces no change a blinded assessor can detect, and patients rate their own results significantly higher than investigators do [1]. Where the evidence is comparatively stronger is combination within a visit, supported by a randomized split-face study [3]. A reasonable approach is assessment first, a defined interval before judging the result, and a decision about further treatment based on measured change rather than on a course purchased in advance. Anyone considering treatment will find our pre-treatment consultation checklist useful for the questions worth asking.

This article is for informational purposes and does not constitute medical advice.