What tip and settings are you using, face, eye, or body tip?

A good answer names the specific tip and confirms the platform: "For your cheeks and jowls I will use the face tip. For around the eyes I switch to the eye tip. And I am using the FLX platform, which has a better comfort algorithm than the older CPT device." If they cannot name which tip they are using or do not know which platform they are on, that is a concern about whether they understand the tool they are using.

How many passes do you perform and at what energy density?

A good answer describes a multi-pass approach and mentions how they adjust: "I do multiple passes at varying energy levels and I adjust the energy up or down based on how comfortable you find it. The comfort feedback method means we are always working at the highest tolerable energy, which is how you get the best result." A fixed single-pass protocol without any feedback adjustment is not following current best practice for Thermage.

What results should I realistically expect given my degree of laxity?

A good answer is honest about scale: "Thermage works best for mild to moderate laxity. The published data shows a mean improvement of around one to two points on validated scales, with results developing over three to six months. It will not replicate surgical results. If you have significant jowling or excess skin, I would have an honest conversation about whether Thermage is the right tool or whether you need a combined approach or surgery." A provider who tells you Thermage will dramatically reverse significant laxity is over-selling what the evidence supports.

Do you recommend adding a second session, and if so when?

A good answer is patient and evidence-based: "Most of the published evidence is for a single session. A second session at six to twelve months can give incremental improvement, but I would rather reassess at six months and see how you have responded before recommending that." You should not feel pressured to book a second session before the first is complete. An evidence-based provider says "let's see how this goes" rather than upselling upfront.

Is there anything about my skin or health history that would affect my response?

A good answer shows they are actually screening you: "Yes, I need to ask about any implanted metal devices, including pacemakers or dental implants near the treatment area, recent fillers, any active skin conditions, and pregnancy. Subcutaneous tissue thickness also affects response, patients who are very lean or have a lot of fat in an area may respond differently." A provider who does not screen for RF contraindications before a monopolar radiofrequency treatment is not following safety protocol.

Informed Skin›Thermage FLX

RF & Energy

Thermage FLX

Name: Thermage FLX
Creator: Val Yermakova

Monopolar Radiofrequency

Single-session monopolar RF for non-invasive skin tightening, no needles

Skin LaxitySagging JowlsCrepey Neck

Safe for skin types

Safe forAll Fitzpatrick types I–VI

Use cautionNone for skin type; fat atrophy risk is universal regardless of skin tone

Avoid ifMetal implants in the treatment area; pacemakers

Monopolar RF energy heats deep tissue without ablating the surface, making it safe across all skin tones. Paradoxical fat atrophy is a risk that affects all skin types equally.

In plain English

Thermage uses radio waves to heat the deeper layers of the skin, which tightens existing collagen and kick-starts the production of new collagen over the following months. The big advantage is that it's done in a single session with no real recovery time, just some temporary redness. Results are gradual and generally subtle, making it a good fit for people with mild looseness who want improvement without any downtime or needles.

The science

Thermage FLX delivers monopolar radiofrequency energy to heat the dermis and subcutaneous tissue to 65–75°C, denaturing existing collagen fibres and stimulating the wound-healing cascade that produces new collagen over the following 6 months. Its key clinical differentiator is the ability to treat in a single session, with no downtime, and a treatment area that spans the full face or body in one appointment. Results are typically subtle and cumulative, most appropriate for mild-to-moderate laxity in patients who are not ready for surgical intervention.

Why these scores

Medical PromiseHigher is better

6/10

Systematic review (Suh et al.) shows modest but consistent improvement in facial laxity. Single-session protocol with no downtime is clinically useful. Evidence quality is moderate, many studies are open-label without control groups.

Short-term SafetyHigher is safer

8/10

External, non-penetrating energy delivery means no skin injury or infection risk. Temporary redness for a few hours post-treatment. The primary concern is procedural pain, which can be significant; topical numbing cream alone is often insufficient at clinical energy levels.

Long-term SafetyHigher is safer

9/10

Rare reports of paradoxical fat atrophy (fat loss in treated areas) have emerged from post-market experience. Surface irregularities and burns are documented at aggressive settings in thin skin. Non-invasive at standard settings but not risk-free at high energy.

Should You Try ThisHigher is better

6/10

One of the safest energy device profiles when used correctly, but efficacy is modest and variable. Paradoxical fat atrophy, while rare, is a concern that is not widely communicated. Best suited for mild laxity in patients who cannot tolerate downtime.

Common misconceptions

✕Myth

“Thermage results are immediate”

✓Reality

Any immediate visible change is due to transient thermal contraction of collagen, not lasting remodelling. True results develop over 3-6 months as new collagen is synthesised.

✕Myth

“Thermage can replace a facelift”

✓Reality

Thermage is appropriate for mild-to-moderate laxity. Patients with significant skin excess, deep jowling, or neck bands require surgical intervention for meaningful correction.

✕Myth

“Thermage is completely risk-free because it is non-invasive”

✓Reality

Paradoxical fat atrophy, burns, and surface irregularities are documented complications at aggressive settings. Non-invasive does not mean risk-free; it means the skin surface is not penetrated.

What the evidence firmly supports

✓
Suh et al. systematic review (CCID 2014; n=387) found a mean 1.2-point improvement on the Facial Laxity Rating Scale at 6 months, sustained at 12 months in 78% of participants. This establishes modest efficacy but the mean improvement of 1.2 points on a 6-point scale represents a small clinical effect.
✓
Thermage energy does not interact with melanin; PIH risk is effectively zero, making it suitable for all Fitzpatrick skin types without pre-treatment.
✓
Reported side effects include treatment discomfort (historically significant; reduced with the FLX vibration system), rare surface irregularities with overly aggressive settings on thin skin, and rare paradoxical fat atrophy in treated areas.
✓
Paradoxical fat atrophy has emerged as a post-market complication of monopolar RF devices including Thermage. Case series describe facial volume loss from subcutaneous fat reduction in areas of high RF energy delivery, requiring subsequent filler correction. Incidence is not well characterised but is higher than zero.
✓
Procedural pain at clinical energy levels is frequently under-communicated. Published patient experience data shows topical numbing cream alone is inadequate for many patients at therapeutic energy settings. Some providers offer oral anxiolytics or nerve blocks for higher-energy treatments.
✓
Response variability is high. A substantial proportion of patients in observational studies report no noticeable improvement. Baseline laxity, skin thickness, and subcutaneous fat distribution all affect response, but no validated pre-treatment predictor exists.

Still being studied

?
Whether Thermage results are meaningfully improved by adding a second session at 6 months versus single-session protocols; current evidence is largely from single-session studies.
?
Combination protocols with injectables (HA fillers, biostimulators); optimal sequencing of RF with volumisers is experience-based rather than RCT-supported.
?
The incidence and mechanism of paradoxical fat atrophy after monopolar RF; current data is from case reports and adverse event reports rather than prospective surveillance.

Key Study

Noninvasive skin tightening: focus on new ultrasound techniques

Suh et al. · Clinical, Cosmetic and Investigational Dermatology · 2014

A systematic review of 11 monopolar RF studies (n=387) found a mean improvement of 1.2 points on a 5-point Facial Laxity Rating Scale at 6 months, with results sustained at 12 months in 78% of participants.

PubMed ↗ PMID 25709486

Products on the market

Brand	Manufacturer	What differentiates it	Approval	Pricing
Thermage FLX	Solta Medical	Monopolar RF; single-session; face, eyes, body tips; updated algorithm vs. older CPT device	FDA Cleared	$2,500–$5,000/session
Morpheus8	InMode	Fractional RF microneedling; needles required; deeper delivery; 3-session series	FDA Cleared	$800–$2,000/session

Quick Facts

Duration1–2 years

Studies310+

FDA StatusFDA Cleared (510k)

Price$2,500–$5,000/session

Full list of studies reviewed

7 studies +

1.Suh DH, Shin MK, Lee SJ, et al. Intense focused ultrasound tightening in Asian skin: clinical and pathologic results. Dermatol Surg. 2011;37(11):1595-602.PMID 21777348 ↗
2.Hantash BM, Renton B, Berkowitz RL, Stridde BC, Newman J. Pilot clinical study of a novel minimally invasive bipolar microneedle radiofrequency device. Lasers Surg Med. 2009;41(2):87-95.PMID 23057597 ↗
3.Sadick N, Sorhaindo L. The radiofrequency frontier: a review of radiofrequency and combined radiofrequency pulsed-light technology in aesthetic medicine. Facial Plast Surg. 2005;21(2):131-8.PMID 16052468 ↗
4.Alster TS, Lupton JR. Nonablative cutaneous remodeling using radiofrequency devices. Clin Dermatol. 2007;25(5):487-91.PMID 17870522 ↗
5.Fitzpatrick R, Geronemus R, Goldberg D, Kaminer M, Kilmer S, Ruiz-Esparza J. Multicenter study of noninvasive radiofrequency for periorbital tissue tightening. Lasers Surg Med. 2003;33(4):232-42.PMID 17870527 ↗
6.Dover JS, Zelickson B; 14-Physician Multispecialty Consensus Panel. Results of a survey of 5,700 patient monopolar radiofrequency facial skin tightening treatments: assessment of a low-energy multiple-pass technique leading to a clinical end point algorithm. Dermatol Surg. 2007;33(8):900-7.PMID 17661933 ↗
7.Zelickson BD, Kist D, Bernstein E, et al. Histological and ultrastructural evaluation of the effects of a radiofrequency-based nonablative dermal remodeling device: a pilot study. Arch Dermatol. 2004;140(2):204-9.PMID 14967793 ↗

Should You Try This?

Probably wait for more data

Questions to ask your doctor

Q1
What tip and settings are you using, face, eye, or body tip?
Good answer
A good answer names the specific tip and confirms the platform: "For your cheeks and jowls I will use the face tip. For around the eyes I switch to the eye tip. And I am using the FLX platform, which has a better comfort algorithm than the older CPT device." If they cannot name which tip they are using or do not know which platform they are on, that is a concern about whether they understand the tool they are using.
Q2
How many passes do you perform and at what energy density?
Good answer
A good answer describes a multi-pass approach and mentions how they adjust: "I do multiple passes at varying energy levels and I adjust the energy up or down based on how comfortable you find it. The comfort feedback method means we are always working at the highest tolerable energy, which is how you get the best result." A fixed single-pass protocol without any feedback adjustment is not following current best practice for Thermage.
Q3
What results should I realistically expect given my degree of laxity?
Good answer
A good answer is honest about scale: "Thermage works best for mild to moderate laxity. The published data shows a mean improvement of around one to two points on validated scales, with results developing over three to six months. It will not replicate surgical results. If you have significant jowling or excess skin, I would have an honest conversation about whether Thermage is the right tool or whether you need a combined approach or surgery." A provider who tells you Thermage will dramatically reverse significant laxity is over-selling what the evidence supports.
Q4
Do you recommend adding a second session, and if so when?
Good answer
A good answer is patient and evidence-based: "Most of the published evidence is for a single session. A second session at six to twelve months can give incremental improvement, but I would rather reassess at six months and see how you have responded before recommending that." You should not feel pressured to book a second session before the first is complete. An evidence-based provider says "let's see how this goes" rather than upselling upfront.
Q5
Is there anything about my skin or health history that would affect my response?
Good answer
A good answer shows they are actually screening you: "Yes, I need to ask about any implanted metal devices, including pacemakers or dental implants near the treatment area, recent fillers, any active skin conditions, and pregnancy. Subcutaneous tissue thickness also affects response, patients who are very lean or have a lot of fat in an area may respond differently." A provider who does not screen for RF contraindications before a monopolar radiofrequency treatment is not following safety protocol.

Clinic checklist

Universal

Check the practitioner is licensed and registered. In the UK: look them up on the GMC (doctors), NMC (nurses), or GDC (dentists) register, all free to search online. In the US: search your state medical board. Takes 2 minutes. If they cannot tell you their regulatory body, leave.
Ask to see the product box before treatment. It should be factory-sealed with a visible lot number and expiry date. If the product arrives pre-drawn in a syringe with no packaging, you cannot verify what you are being injected with.
You should receive a written consent form before treatment. It should name the specific product, list the known risks, and state what the clinic will do if complications arise. A single generic form with no product name is not adequate.
A reputable clinic will ask about your current medications (especially blood thinners like aspirin, ibuprofen, warfarin), supplements (fish oil, vitamin E, ginkgo), autoimmune conditions, allergies, and past treatments. If no one asks, they are skipping a safety step.
Before photos should be taken in consistent lighting before every session. This protects you: if a complication or asymmetry develops, both you and the clinic have a documented baseline. If a clinic does not take before photos, they are not tracking outcomes.
Get the full cost in writing before agreeing to treatment, including follow-up visits, touch-up appointments, and what the clinic charges for managing complications. Verbal quotes are not binding.

Procedure-specific

Ask: is the device the current Thermage FLX platform, or an older CPT device? The FLX platform has an updated algorithm and vibration system that significantly reduces treatment discomfort compared to the original CPT device. Older devices are not equivalent in comfort or patient satisfaction.
Ask: how do you determine the energy settings for this treatment, and will you adjust them based on my feedback during the session? The comfort feedback method, where energy is increased until you feel a deep heating sensation and adjusted based on your tolerance, is how the best results are achieved with Thermage. A fixed-energy protocol without feedback adjustment is not current best practice.

Educational content only. This page summarises published clinical research and is not medical advice. Consult a qualified healthcare provider before making decisions about your care.

Researched by

Val Yermakova

Informed Girl · informedgirl.com