Separate firmness from fullness
Loose skin and localised tissue can both soften the jawline but require different treatment priorities.
LOUAVE Lifting Center
Thermage FLX vs ONDA: tightening or contouring for your concern?
Compare two different energy-based treatment approaches at LOUAVE Dermatology Clinic in Seoul. Thermage FLX is commonly discussed for broad skin firmness and wrinkle concerns, while ONDA may be considered when selected contour, under-chin tissue and skin laxity occur together.
A soft jawline may result from loose skin, localised submental tissue, muscle activity, facial volume or natural bone structure. The correct treatment depends on which tissue is creating the concern.
Tightening vs Contouring Comparison
Thermage FLX
Non-invasive radiofrequency
ONDA
2.45 GHz Coolwaves energy
Thermage technology
Radiofrequency
ONDA technology
2.45 GHz microwaves
Common comparison area
Lower face & neck
Final selection
Tissue dependent
Skin laxity, tissue thickness, wrinkle pattern, facial volume and jaw-to-neck anatomy should be assessed before either treatment is recommended.
Understanding the Difference
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Thermage focuses on broad firmness. ONDA adds a contouring discussion.
Thermage FLX uses non-invasive radiofrequency energy delivered through a selected treatment tip. It is commonly discussed for facial and eye-area wrinkles, broad firmness and skin-tightening concerns.
ONDA uses controlled 2.45 GHz Coolwaves microwave energy. Its different handpieces may be considered for selected skin laxity, submental treatment and localised tissue concerns.
Review the treatment area
Face, eye, jawline, neck and under-chin areas have different anatomy and safety requirements.
Protect facial proportion
Contour treatment should not reduce tissue where volume is supporting the face or jawline.
Technology Explained
Radiofrequency versus Coolwaves microwave energy.
These systems deliver energy differently and should not be presented as interchangeable treatments for every form of facial or neck ageing.
Non-Invasive Radiofrequency
Thermage FLX
Thermage FLX delivers radiofrequency energy through selected treatment tips. Automatic energy calibration, cooling blasts and vibration features support consistent energy delivery and patient comfort.
Non-invasive radiofrequency energy
Automatic energy calibration
Cooling and vibration features
Face, eye, neck and selected body areas
Explore Thermage FLX Face →
Coolwaves Microwave Energy
ONDA
ONDA uses controlled 2.45 GHz microwave energy. Deep and Shallow handpieces differ in their treatment depth, with the Shallow handpiece commonly associated with skin tightening and submental treatment.
2.45 GHz Coolwaves technology
Deep and Shallow handpieces
Skin laxity and submental assessment
Controlled tissue-specific planning
Explore ONDA Double Chin →
Compare by Concern
Begin with the tissue creating the visible concern.
These examples describe common consultation pathways. They do not replace individual diagnosis or confirm which treatment is medically appropriate.
Broad Skin Firmness
Thermage FLX may be discussed when broad facial or neck firmness is the main treatment priority.
Common discussion: Thermage FLXFacial Wrinkles
Thermage FLX may be considered for selected facial or periorbital wrinkle concerns after area-specific assessment.
Common discussion: Thermage FLXUnder-Chin Fullness
ONDA may be discussed when suitable submental tissue contributes to the visible double-chin concern.
Common discussion: ONDAJawline Softness
Either treatment may be considered depending on whether loose skin, selected tissue fullness or both are present.
Individual device selectionEye-Area Wrinkles
Thermage FLX has an eye-specific treatment approach. ONDA should not be treated as an equivalent eye procedure.
Area-specific safety planningSignificant Laxity
Advanced skin or tissue laxity may not respond sufficiently to either non-surgical treatment.
Surgical opinion may apply Side-by-Side Comparison
Thermage FLX and ONDA at a glance.
Treatment time, preparation, coverage and settings depend on the selected area, tissue characteristics and individual medical plan.
Comparison
Thermage FLX
ONDA
Energy type
Non-invasive radiofrequency
2.45 GHz Coolwaves microwave energy
Common treatment focus
Wrinkles, broad firmness and skin tightening
Selected contour, submental tissue and skin laxity
Common facial areas
Face, eye area, jawline and neck
Lower face, under-chin area and selected neck concerns
Device components
Area-specific treatment tips
Deep and Shallow handpieces
Treatment preparation
Cleansing, return pad, grid mapping and selected tip
Cleansing, mapping, dedicated oil and handpiece selection
Treatment sensation
Repeated heat, pressure or discomfort may occur
Warmth, heat or pressure may be experienced
Fat reduction focus
Not primarily a localised fat-treatment device
May be discussed for selected localised adiposity
Eye-area treatment
Dedicated eye-treatment approach for selected concerns
Not an equivalent Thermage eye-area treatment
Result development
Firmness-related changes may develop gradually
Contour and firmness changes may develop progressively
Better treatment
Depends on whether skin firmness is the main concern
Depends on whether contour or selected fullness is involved
Treatment Selection Process
Meet the LOUAVE Doctors →
Choose the tissue target before choosing the machine.
LOUAVE reviews firmness, wrinkle pattern, tissue thickness, localised fullness, facial proportions, previous treatments and medical history before making a recommendation.
Consultation & Medical Review
The doctor discusses the concern, medications, implants, health history and previous procedures.
Skin & Tissue Assessment
Firmness, laxity, tissue thickness, wrinkles, asymmetry and facial structure are reviewed.
Device Selection
The clinician selects Thermage FLX, ONDA, another procedure or no treatment according to the diagnosis.
Mapping & Treatment
Treatment areas are mapped before device-specific preparation, tip or handpiece selection and treatment.
Aftercare & Review
Expected responses, warning symptoms and the appropriate time for evaluating results are explained.
Recovery & Result Development
Temporary tissue response is not the final result.
Redness, warmth, swelling or temporary firmness can influence how the area appears immediately after treatment.
Treatment Day
Temporary warmth, redness, tenderness or swelling may occur depending on the treatment area and settings.
Early Recovery
Sensitivity, bruising, mild swelling, firmness or temporary altered sensation may continue.
Developing Change
Tightening, wrinkle, contour or firmness changes may become more noticeable gradually.
Clinical Review
Further treatment should be discussed only after the response and remaining concern are reviewed.
Which May Suit You?
A general guide before your clinical assessment.
These points describe common consultation pathways and do not confirm individual medical suitability.
Thermage FLX may be discussed when:
- Broad skin firmness or tightening is the primary concern.
- Selected facial, eye-area or neck wrinkles are being assessed.
- Radiofrequency treatment is medically suitable.
- Broad and systematic treatment coverage is appropriate.
- You understand that the visible response varies individually.
ONDA may be discussed when:
- Selected under-chin or lower-face fullness is involved.
- Skin laxity occurs together with suitable localised tissue.
- Tissue thickness is appropriate for the proposed handpiece.
- Microwave treatment is medically suitable.
- You understand that contour change cannot be guaranteed.
Can Thermage FLX and ONDA be included in one treatment plan?
A clinician may discuss staged treatment when broad skin firmness and selected localised tissue concerns occur together. This does not mean that every patient needs both devices, and unnecessary energy overlap should be avoided.
Confirm that two separate treatment goals exist
Map tightening and contour areas separately
Review previous energy and injectable treatments
Assess the response before adding further treatment
Frequently Asked Questions
Questions about Thermage FLX vs ONDA.
Final recommendations depend on the treatment area, tissue characteristics, health history and the change you want to discuss.
Is Thermage FLX better than ONDA?
Neither treatment is universally better. Thermage FLX
is commonly discussed for wrinkles and broad skin
firmness, while ONDA may be considered when selected
contour, submental tissue or skin laxity is involved.
What is the main difference between the treatments?
Thermage FLX uses non-invasive radiofrequency energy.
ONDA uses controlled 2.45 GHz Coolwaves microwave energy
delivered through handpieces with different treatment depths.
Which treatment is more focused on skin tightening?
Thermage FLX is commonly discussed for broad skin
firmness, wrinkles and tightening. ONDA may also support
selected firmness concerns, particularly when contour
or submental tissue is part of the assessment.
Which treatment may be discussed for a double chin?
ONDA may be discussed when suitable submental tissue
contributes to the concern. Thermage FLX may be discussed
when skin firmness is the main issue. The cause must be
assessed before treatment.
Can Thermage FLX remove under-chin fat?
Thermage FLX should not be presented as a predictable
localised fat-removal treatment. It is primarily
discussed for wrinkles, firmness and skin tightening.
Can ONDA treat the eye area?
ONDA should not be treated as an equivalent replacement
for the dedicated Thermage eye-area approach. Any
treatment near the eyes requires specific assessment
and protection.
Which treatment is more comfortable?
Sensation varies according to area, settings and personal
sensitivity. Thermage FLX may feel like repeated heat or
pressure, while ONDA may produce warmth or pressure
during handpiece movement.
Can Thermage FLX and ONDA be combined?
They may be staged for selected patients when broad
firmness and localised contour concerns are both present.
Timing, treatment areas and previous procedures require review.
Can either treatment reshape the jawbone?
No. Neither treatment changes bone structure or creates
additional chin projection. Structural concerns require
a different treatment discussion.
Can either treatment replace surgery?
No non-surgical treatment should be presented as an
equivalent replacement for a facelift or neck lift.
Significant laxity may require a surgical opinion.
International Appointment
Choose Thermage FLX or ONDA after the right tissue assessment.
Share the areas you want to discuss, previous radiofrequency, contouring or injectable treatments, relevant medical history, preferred appointment dates and Seoul travel schedule. Final treatment selection is confirmed after consultation.
Important treatment information
This page provides general educational information and does not replace an individual medical consultation. Thermage FLX and ONDA use different energy systems, and neither is suitable for every patient or concern. Treatment areas, settings, tips, handpieces, comfort measures, recovery and results vary. Temporary effects may include redness, warmth, swelling, tenderness, bruising, firmness, numbness, sensitivity or discomfort. Less common complications may include burns, blistering, scabbing, pigmentation change, prolonged pain, contour irregularity, skin-surface injury or scarring. Thermage FLX is contraindicated for patients with an implantable pacemaker, defibrillator or another implantable electrical device. Patients should disclose pregnancy or breastfeeding status, active infection, open wounds, relevant implants, medical devices, circulation or sensation disorders, neurological conditions, fillers, threads, previous surgery, injectables and earlier energy-based treatments. Neither treatment changes bone structure, guarantees fat reduction or reproduces a surgical result. Final treatment planning must follow assessment by an appropriately qualified medical professional.