If you have been researching skin tightening treatments in Fort Lauderdale, there is a good chance you have come across two names: Sofwave and XERF. Both promise collagen stimulation, firmer skin, and a non-surgical path to looking refreshed. And if you have looked at online reviews or clinic websites, you may have noticed something: the comparison often boils down to one oversimplified idea — that going deeper into the skin produces better results.
At Healthy Glow Aesthetics, we think our patients deserve more than a marketing talking point. So let’s actually look at the science — because when it comes to collagen, deeper is not better. Precise is better.
Why Depth Matters — And Why More Is Not More
Every non-invasive skin tightening treatment works on the same basic principle: apply controlled heat to a specific layer of skin to trigger collagen remodeling. The key word is specific.
Collagen is produced in the mid-dermis — a layer that sits approximately 1.5mm below the skin’s surface. That is exactly where Sofwave’s SUPERB™ (Synchronous Ultrasound Parallel Beam) technology is designed to deliver its energy.
XERF (Extended RF) uses radiofrequency energy that reaches depths of 4mm or more — passing through the dermis and into the subcutaneous fat layer, and in some applications, approaching the SMAS (the muscular layer beneath the fat). This is the same layer targeted in traditional surgical facelifts.
Here is the clinical reality: heating tissue below the dermis does not produce more collagen. It produces more risk. Subcutaneous fat is structurally important for facial volume and contour. When it is disrupted by heat, patients can experience uneven results, volume loss, or changes in facial structure that are difficult to reverse. This is a documented concern in the aesthetic medicine literature with deep-energy RF devices.
Sofwave was specifically engineered to stay within the dermis — the productive zone — while its integrated Sofcool™ technology protects the skin surface in real time. That precision is the point, not a limitation.
Let’s Talk Honestly About Comfort
One thing that gets misrepresented online is the comfort level of these treatments. Some descriptions make Sofwave sound completely painless, which sets patients up for a surprise.
The truth: Sofwave delivers a series of warm, pulsed sensations that most patients describe as intense but completely tolerable. In fact, many patients report discomfort levels in the range of 2–3 out of 10, especially when topical numbing is used.
What is important to understand is that the discomfort is a feature, not a flaw. That warmth is exactly what collagen remodeling requires: precise thermal energy at 65–70°C, delivered to the right layer. If a treatment is completely painless, it may not be reaching the depth or temperature needed for meaningful results.
XERF has a similar comfort profile — warm, pulsed energy. So comfort alone is not a meaningful differentiator between the two. What matters is where that energy is going and what it is doing when it gets there.
How Each Technology Works
Sofwave™ — Ultrasound at 1.5mm
- Uses synchronous ultrasound beams (SUPERB™) to deliver energy precisely to the mid-dermis
- Targets the exact layer where collagen and elastin are produced
- Integrated Sofcool™ technology cools the skin surface in real time throughout treatment
- 7 FDA clearances: facial lines and wrinkles, eyebrow lifting, submental and neck lifting, cellulite reduction, acne scar improvement, and arm skin laxity
- Biopsy data shows 68% average increase in collagen and 33% increase in elastin (Wat et al., 2022)
- Supported by numerous peer-reviewed clinical publications
XERF — Radiofrequency at 4mm+
- Uses radiofrequency (electrical) energy that heats tissue at deeper levels
- Targets deeper than the dermis — reaching subcutaneous fat and potentially SMAS layer
- Deeper energy delivery increases the potential for unintended tissue effects
- FDA clearance: cleared for electrocoagulation and hemostasis (the control of bleeding) – which is a different intended use than aesthetic lifting or skin tightening
- Newer technology with a growing but limited published evidence base
- Comfort profile is comparable to Sofwave — warm and pulsed
Side-by-Side Comparison
| Sofwave™ | XERF (Radiofrequency) | |
| Energy Type | Synchronous ultrasound | Radiofrequency (electrical) |
| Target Depth | 1.5mm — mid-dermis | 4mm+ — approaches muscle/SMAS |
| Collagen Target Zone | Precisely the dermis, where collagen is made | Deeper tissue — less collagen benefit |
| Surface Cooling | Integrated Sofcool™ real-time cooling | Varies by device/technique |
| Fat Layer Risk | Zero — stays above fat layer | Higher — deeper energy can affect fat |
| FDA Clearances | Facial lines/wrinkles, eyebrow lift, neck & submental lift, cellulite, acne scars, arm skin laxity (7 total) | Electrocoagulation & hemostasis |
| Biopsy Data | 68% avg collagen increase (Wat et al. 2022) | Emerging / limited published data |
| Comfort Level | Warm pulses — comparable to XERF, well tolerated | Similar warmth, variable by device |
| Downtime | Little to none | Little to none |
| Results Timeline | 8–12 weeks, full at 3–6 months | Variable |
| Longevity | Up to 12+ months | Varies |
What Clinical Evidence Shows
Sofwave’s outcomes are backed by biopsy-based research. In a published study (Wat et al., 2022), biopsies taken after treatment demonstrated a 68% average increase in collagen and a 33% average increase in elastin. This is objective, tissue-level data — not just before-and-after photos.
Sofwave is also supported by numerous peer-reviewed publications and has been used in hundreds of thousands of treatments worldwide across diverse skin types. Its clinical track record spans multiple years of real-world use.
XERF is newer, with an expanding evidence base. The clinical data available at this time does not yet include published biopsy studies demonstrating dermal collagen response at the same level as Sofwave. This does not mean it cannot produce results — but it does mean the evidence base is at an earlier stage.
Why We Chose Sofwave at Healthy Glow Aesthetics
We evaluate every technology we bring into our practice on three criteria: the science behind it, the safety profile, and the experience it delivers to our patients.
Sofwave earned a place at Healthy Glow Aesthetics because:
- Its energy delivery is precise and confined to the productive collagen zone — not beyond it
- The integrated cooling system actively protects the skin surface throughout treatment
- The clinical evidence includes objective biopsy-level data, not just patient satisfaction surveys
- Its 7 FDA clearances are specifically aesthetic — covering lifting, wrinkle improvement, cellulite, acne scars, and arm laxity
- The treatment is efficient: 30–45 minutes, with no downtime for most patients
We want our patients to leave with natural-looking results and confidence in the treatment they received. That starts with choosing technology we trust.
What Results Look Like — And When
Non-invasive collagen treatments require patience. Results develop as your body produces and remodels collagen — a biological process that cannot be rushed.
- First 4–6 weeks: Some patients notice early firmness or improved texture
- 8–12 weeks: Noticeable lifting and tightening begin to appear
- 3–6 months: Full collagen remodeling — the most visible stage of improvement
- 12 months and beyond: Many patients maintain results for a year or longer
One treatment session is typically sufficient for most patients. Annual maintenance is recommended to sustain results as natural aging continues.
Who Is a Good Candidate for Sofwave?
Sofwave is well suited for adults with mild to moderate skin laxity who want visible improvement without surgery or extended recovery. It is particularly effective for:
- Jawline definition and lower face laxity
- Neck looseness and “tech neck” texture
- Submental (under-chin) tightening
- Eyebrow lifting
- Fine lines and early wrinkles
- Upper arms, thighs, and body laxity
A consultation with our team at Healthy Glow Aesthetics will help determine whether Sofwave is the right fit for your skin, goals, and anatomy.
Frequently Asked Questions
Q: Is Sofwave painful?
A: Most patients describe it as a series of warm, intense pulses — real but manageable. A topical numbing cream is applied before treatment to improve comfort. The sensation is comparable to XERF and similar RF devices. The warmth you feel is the therapeutic heat at work — it is what stimulates collagen remodeling.
Q: Is XERF safer or more effective because it goes deeper?
A: Not necessarily. Collagen is produced in the mid-dermis at 1.5mm. Energy delivered deeper than that does not produce more collagen — it reaches tissue (subcutaneous fat, SMAS) that is not the target zone for collagen stimulation, and may introduce additional risk to facial structure and volume. Precise depth targeting, not maximum depth, produces the most consistent results.
Q: How long does a Sofwave treatment take?
A: Most facial treatments take 30–45 minutes. Body treatments may take slightly longer depending on the area being addressed.
Q: When will I see results?
A: Early changes are sometimes visible within 4–6 weeks. The most significant lifting and tightening typically appears between 8–12 weeks, with continued collagen remodeling through 3–6 months.
Q: Is there downtime after Sofwave?
A: Little to none. Most patients return to normal activities immediately. Mild redness may occur but typically resolves within a few hours.
Q: What is Sofwave FDA-cleared for?
A: Sofwave holds 7 FDA clearances: improvement of facial lines and wrinkles, lifting of the eyebrow, lifting of lax submental and neck tissue, cellulite reduction, acne scar improvement, and arm skin laxity. These are specific aesthetic indications. XERF is cleared for electrocoagulation and hemostasis (the control of bleeding) – which is a different intended use than aesthetic lifting or skin tightening.
Q: Is there biopsy data proving Sofwave works?
A: Yes. Published biopsy studies (Wat et al., 2022) demonstrate a 68% average increase in collagen and 33% average increase in elastin following Sofwave treatment. This is objective, tissue-level evidence of the biological response.
Q: Can Sofwave be combined with other treatments?
A: Yes. Sofwave complements injectables like Botox and fillers, resurfacing treatments, and medical-grade skincare. Our team can help design a combination approach tailored to your goals.
Q: How long do results last?
A: Clinical evidence shows results lasting up to 12 months or longer following a single treatment. Annual maintenance sessions are recommended to sustain outcomes as the skin continues to age naturally.
Ready to Learn If Sofwave Is Right for You?
At Healthy Glow Aesthetics in Fort Lauderdale, we take the time to understand your skin, your goals, and your questions before recommending any treatment. If you are considering Sofwave — or comparing it to XERF or other options — we would love to walk you through the science and what to realistically expect.
Schedule your consultation at Healthy Glow Aesthetics today.
