Thermage vs Ultherapy vs Onda: Which Anti-Aging Treatment is Right for You? (2026)

✍️ Medical Review: Dr. Park Sang-won (박상원) | Director | Board-Certified Dermatologist | SIA Dermatology Clinic

If you’re researching anti-aging treatments in Korea, you’ve probably encountered three names repeatedly: Thermage, Ultherapy, and Onda. They’re among the most popular non-surgical lifting devices in Korean dermatology clinics — but they work in fundamentally different ways.

Choosing the wrong device for your specific concern means wasting money on a treatment that targets the wrong layer of your skin. This guide will help you understand exactly what each device does, who it’s best for, and how Korean dermatologists decide which one (or which combination) to recommend.

---

The Quick Answer

Your Main Concern	Best Device	Why
Loose, sagging skin	Thermage FLX	RF energy heats dermis → immediate tightening + collagen rebuilding
Drooping contours, undefined jawline	Ultherapy	Focused ultrasound targets SMAS layer → physical lifting from deep tissue
Double chin + sagging (fat + skin)	Onda	Microwave specifically targets submental fat + tightens skin
Maximum anti-aging result	Thermage + Ultherapy combined	Deep lift + surface tightening — the gold standard combination

---

Thermage FLX: The Skin Tightening Specialist

How It Works

Thermage uses monopolar radiofrequency (RF) energy to heat the dermis and subcutaneous fat layer (1.5–4.3mm deep). The heat causes existing collagen fibers to contract (immediate tightening) and stimulates new collagen production over 3–6 months.

Key Specifications

Feature	Details
Technology	Monopolar Radiofrequency (RF)
Depth	Dermis + subcutaneous fat (1.5–4.3mm)
Primary effect	Skin tightening, pore refinement, texture improvement
Treatment time	40–60 minutes (full face)
Downtime	Essentially none — mild redness same day
Full result	Immediate tightening feel + progressive improvement over 2–3 months
Duration	12–18 months
Pain level	Moderate, tolerable (5th-gen FLX has significantly improved comfort)

Best For

• Overall skin laxity and loss of firmness
• Enlarged pores and rough skin texture
• Fine lines and early wrinkles
• Patients who want zero downtime
• Thin faces (Thermage tightens without volume loss)

Not Ideal For

• Very thin faces (may cause slight volume reduction in some cases)
• Patients seeking dramatic lifting (better addressed by Ultherapy or thread lift)

Price at SIA Clinic

Package	Contents	Price (KRW)	Approx. USD
Thermage FLX 600 shots + Onda 30kJ + Skin Botox	Comprehensive tightening	₩1,990,000	~$1,510
Thermage FLX 600 shots	Full face tightening	₩990,000	~$752
Thermage FLX 600 + Ultherapy 300	Classic combo	₩2,690,000	~$2,042
Ultimate (Thermage 600 + Ultherapy 600 + Onda 40kJ + Titanium 60kJ)	Full-spectrum anti-aging	₩3,600,000	~$2,735

---

Ultherapy Prime: The Deep Lifting Powerhouse

How It Works

Ultherapy uses High-Intensity Focused Ultrasound (HIFU) to deliver precise thermal energy to the SMAS layer (Superficial Musculo-Aponeurotic System) — the same layer that plastic surgeons pull tight during surgical facelifts. This creates micro-injury points that trigger collagen remodeling, resulting in a lifting effect.

Key Specifications

Feature	Details
Technology	High-Intensity Focused Ultrasound (HIFU)
Depth	SMAS layer (1.5–4.5mm) — deeper than Thermage
Primary effect	Lifting: jawline definition, mid-face elevation, brow lift
Treatment time	30–60 minutes (full face)
Downtime	Minimal — mild swelling/redness for 1–3 days
Full result	Gradual improvement over 2–3 months
Duration	6–12 months (Ultherapy Prime) / 1–2 years (Ultherapy 2nd gen)
Pain level	Moderate to high — especially along jawline and forehead. Numbing cream helps but doesn’t eliminate it completely.

Best For

• Sagging jawline and jowling
• Deepening nasolabial folds
• Drooping brows and heavy eyelid appearance
• Double chin (when combined with Onda)
• Patients who want visible lifting results

Not Ideal For

• Very thin skin (may be too intense)
• Severe sensitive skin conditions
• Patients with very low pain tolerance

Price at SIA Clinic

Package	Contents	Price (KRW)	Approx. USD
Ultherapy Prime 300 shots	Focused lifting	₩500,000	~$380
Ultherapy Prime 300 + Onda 30kJ	Lift + fat reduction	₩990,000	~$752
Ultherapy Prime 300 + Oligio 300	Lift + collagen boost	₩1,290,000	~$980
Ultherapy Prime 300 + Thermage FLX 600	Gold standard combo	₩2,690,000	~$2,042

---

Onda: The Fat-Melting + Tightening Device

How It Works

Onda uses microwave technology to specifically target and reduce subcutaneous fat while simultaneously tightening the overlying skin. It’s the only device in this comparison that directly addresses fat as a cause of sagging.

Key Specifications

Feature	Details
Technology	Microwave (2.45 GHz)
Depth	Subcutaneous fat layer
Primary effect	Fat reduction + skin tightening (dual action)
Treatment time	20–30 minutes per area
Downtime	Minimal — mild redness and warmth
Full result	Gradual over 6–10 sessions (1 per week recommended)
Duration	Maintenance needed (multiple sessions per course)
Pain level	Low — warm sensation, comfortable for most patients

Best For

• Double chin and submental fat
• Jawline sagging caused by fat accumulation (not just skin laxity)
• Body contouring (abdomen, arms, thighs)
• Patients who prefer low-pain treatments
• Budget-conscious approach (lower per-session cost)

Not Ideal For

• Skin-only laxity without excess fat
• Patients wanting immediate dramatic results (requires multiple sessions)

Price at SIA Clinic

Package	Contents	Price (KRW)	Approx. USD
Onda 30kJ single session	Lower face	₩450,000	~$342
Shrink 1000cc	Korean HIFU, budget lifting	₩259,000 (promo)	~$197
Ultherapy 300 + Onda 30kJ	Lift + fat melt	₩990,000	~$752
Onda 60kJ + Titanium 30kJ	Dual-device contouring	₩599,000	~$455

---

Additional Devices Available at SIA Clinic

Package	Contents	Price (KRW)	Approx. USD
Oligio 300 shots	Korean RF device, gentle tightening	₩290,000	~$220
Shrink Universe 1000cc	Korean HIFU, budget lifting option	₩259,000	~$197
Titanium 30kJ	Supplementary tightening device	Included in combo packages	—
InMode FX	Entry-level RF for prevention (20s–30s)	₩190,000	~$144

💡 Budget tip: Korean-made devices like Oligio and Shrink Universe use similar technology to Thermage/Ultherapy at 50–70% lower cost. They’re ideal for younger patients (25–35) doing preventive maintenance or for patients who want to try energy-based lifting before committing to premium devices.

Head-to-Head Comparison

Feature	Thermage FLX	Ultherapy Prime	Onda
Technology	Radiofrequency (RF)	Focused Ultrasound (HIFU)	Microwave
Target layer	Dermis + fat (1.5–4.3mm)	SMAS layer (1.5–4.5mm)	Subcutaneous fat
Primary action	Tightening	Lifting	Fat reduction + tightening
Pain level	4/10	6–7/10	2/10
Downtime	None	1–3 days	None
Sessions needed	1 per year	1 per 6–12 months	3–10 per course
Full result time	2–3 months	2–3 months	After full course
Duration	12–18 months	6–12 months	Maintenance required
Best for	Skin laxity, pores	Sagging, jawline	Double chin, fat
Price per session	₩990,000+	₩500,000+	₩450,000+

---

Combination Treatments: Why Korean Clinics Combine Devices

The most sophisticated approach in Korean dermatology is not choosing one device — it’s combining them for complementary effects.

1. Thermage + Ultherapy (The Gold Standard)

• Thermage tightens the surface (dermis)
• Ultherapy lifts the deep layer (SMAS)
• Together: comprehensive lifting and tightening from both directions
• Best for: Patients 35+ with both skin laxity and contour sagging

2. Ultherapy + Onda

• Ultherapy lifts the tissue
• Onda melts the fat causing the sagging
• Together: structural lift + volume reduction
• Best for: Patients with fat-related sagging (heavy lower face, double chin)

3. Thermage + Onda

• Thermage tightens and smooths skin surface
• Onda reduces fat underneath
• Together: slimmer, tighter jawline
• Best for: Patients primarily concerned about jawline definition

4. Thermage + Ultherapy + Onda + Titanium (Ultimate Package)

• All four devices in a comprehensive anti-aging protocol
• Addresses every dimension: surface, depth, fat, and collagen
• Best for: Patients 45+ wanting maximum non-surgical results

---

Which Treatment Should You Choose by Age?

Age	Typical Concern	Recommended Treatment
25–30	Prevention, early signs	InMode (entry-level) or low-shot Thermage FLX (300 shots)
30–35	Early laxity, pore size	Thermage FLX full face (600 shots) annually
35–45	Visible sagging, nasolabial folds	Thermage + Ultherapy combination (the most popular age group for this combo)
45+	Significant laxity + volume loss	Ultherapy 2nd gen + Thermage FLX + Onda (consider adding thread lift or filler)

---

FAQ

Q: Which is more painful — Thermage or Ultherapy?

A: Ultherapy is generally more painful, especially along the jawline and forehead. Thermage FLX (5th generation) is significantly more comfortable than earlier versions. Both are manageable — we apply numbing cream beforehand and adjust energy levels based on your tolerance.

Q: Can I do Thermage and Ultherapy on the same day?

A: Yes. Korean dermatologists frequently perform both in a single session — Ultherapy first (deep work), then Thermage (surface work). The combination takes about 90 minutes and addresses both lifting and tightening simultaneously.

Q: How soon will I see results?

A: You’ll feel an immediate tightening sensation with Thermage. However, the real transformation happens gradually over 2–3 months as your body produces new collagen. With Ultherapy, initial lifting becomes visible around 2–4 weeks, with optimal results at 2–3 months.

Q: Can I fly after Thermage or Ultherapy?

A: Thermage — yes, same day. Ultherapy — technically safe, but we recommend waiting 1–2 days to monitor for any unexpected swelling. For the combined treatment, wait 2–3 days.

Q: Are Korean “shrink” (HIFU) devices as good as Ultherapy?

A: Korean HIFU devices (like Shrink Universe) use similar technology at lower cost. They’re suitable for mild sagging and maintenance. For moderate to severe sagging, the genuine Ultherapy or Ultherapy 2nd Gen delivers stronger, more targeted results. Think of it like generic vs. brand-name — similar mechanism, different precision and energy output.

Q: How often should I get these treatments?

A: Thermage: once every 12–18 months. Ultherapy: once every 6–12 months. Onda: 3–10 sessions per course, then maintenance. Combination treatments typically follow the Ultherapy schedule (every 6–12 months).

---

Ready to Book?

Contact us for a free consultation — our doctors will evaluate your skin and recommend the optimal treatment or combination.

Method	Details
WeChat	siakr01
LINE	siaclinictw
Address	4F & 5F, Central Square Gangnam, 488 Gangnam-daero, Gangnam-gu, Seoul
Hours	Mon–Fri 10:30–20:30 | Sat–Sun 10:30–18:30 (KST)

⚠️ Disclaimer: Prices updated April 2026 and subject to change. All prices before 10% VAT. This article is for informational purposes and does not constitute medical advice. Consult a board-certified dermatologist for personalized recommendations.