
2026-07-23 ⢠Patient Resources & Tips
Hello! This is Seye clinic, dedicated to all aspects of beauty.
"Doctor, how many āthousands of joulesā should I get for Onda Coolwaves Full Face? I'm worried it might be too strongā¦"
We often hear this question in consultations. Many people refer to the strength of Onda Coolwaves in terms of the number of 'lines' or 'thousands of joules,' but the actual standard is the energy unit kJ (kilojoule). Today, we will guide you on how to customize your energy settings based on your face, without being influenced by sheer numbers.
Onda Coolwaves is a procedure that uses microwaves (not focused ultrasound) to safely address facial contours and improve firmness at the same time. Much like how a microwave heats moisture inside food, the microwaves from Onda Coolwaves minimize energy loss at the epidermis and are preferentially absorbed by fat cells. As a result, heat is focused on the dermis and subcutaneous fat layers, promoting collagen contraction and fat reduction. Here, āthousands of joulesā does not refer to lines but denotes the quantity of energy, with 1 kJ = 1,000 joules. At Seye clinic, we use a 3 mm handpiece for surface tightening and a 7 mm handpiece for deeper layers, such as the Double Chin, allowing for individualized planning.

The appropriate amount of energy is customized based on face size and the amount of lower facial fat ā typically 40 kJ, 60 kJ, or 80 kJ.
Case | Recommended kJ | Joules Equivalent | Recommended For |
|---|---|---|---|
Narrow Jawline | 40 kJ | 40,000 J | Small faces, young women, etc. |
Average Face | 60 kJ | 60,000 J | Those with standard jaw/facial structure |
Wide Lower Face/Men | 80 kJ | 80,000 J | Men, faces with thicker fat layers |
Tailoring energy to each clientās actual facial structure helps promote safety and satisfactory results.
Onda Coolwaves is associated with minimal discomfort, with most patients reporting only a mild warming sensation during treatment. Many notice changes immediately after the procedure, and there is virtually no downtime, allowing for immediate return to daily activities, including washing and applying makeup. This can be a good option for those who want to improve both fat reduction and skin firmness at the same time. However, a higher energy setting does not automatically guarantee better outcomesāpersonalized planning is essential.
Category | Onda Coolwaves | General RF Lifting |
|---|---|---|
Energy Unit | kJ (joule, kilojoule) | Shot |
Main Target | Fat, dermis, jawline, Double Chin | Dermis, superficial layers |
Downtime/Discomfort | Virtually none, mild warmth | Low discomfort, immediate routine |
Ideal Candidates | Contour/fat concerns, prefer firmness | General laxity/fine line concerns |
Onda Coolwaves prioritizes safety and is recommended for those seeking both contouring and firming. [[CTA:ź°ź²©]]
Q. What exactly does āthousands of joulesā mean in Onda Coolwaves?
A. āJouleā is an energy unit itself. Onda Coolwaves is based on the total energy (kJ) delivered, not the number of shots.
Q. What is the suitable kJ for the Full Face?
A. For women, typically 40ā60 kJ (40,000ā60,000 J) is used, while for men or those with a wide lower face, up to 80 kJ (80,000 J) may be customized.
Q. Does receiving more joules (energy) result in better outcomes?
A. Higher energy may help with fat breakdown and skin firmness, but more is not always betterācustomizing the dose based on individual conditions is important.
Q. Is it possible to return to daily activities immediately after treatment?
A. Yes, there is virtually no downtime and you can resume your daily routine right away.
At Seye clinic, we do not rely on guesswork. Using EVE LAB precision diagnostics and 3D facial data analysis, we assess facial fat distribution and thickness. Based on these findings, we personalize handpiece depth (3 mm / 7 mm) and energy (kJ) for each client. Our Key Opinion Leader (KOL) medical team directly oversees counseling and the entire procedure process, ensuring skilled planning leads to better outcomes.

With Onda Coolwaves, it is not just about using higher energy, but about carefully planning kJ based on your contours and amount of facial fat. Donāt focus solely on numbersāconsult a professional to find the best approach for you. This has been the chief director of Seye clinic. Thank you.
*This content is intended for informational purposes only and does not substitute for medical diagnosis. Individual results may vary depending on unique characteristics; please consult with medical professionals before undergoing cosmetic procedures.
Ready to experience the difference? Book a free consultation via WhatsApp (+82-10-3110-9806) or browse our current events and packages. Our English-speaking team is ready to help you plan your visit.
Seye Clinic
10F, 55 Seocho-daero 77-gil, Seocho-gu, Seoul
⢠Parking available (1h free with treatment)
Phone: +82-507-1345-5928
Email: info@seyeclinic.com
Opening Hours: Weekdays/Evening Clinic 10:30-21:00 (reservation cutoff 19:00), Weekends/Public Holidays 10:30-19:00 (reservation cutoff 17:00)
Copyright Ā© 2026 SEYE CLINIC. All Rights Reserved.
Seye Clinic
10F, 55 Seocho-daero 77-gil, Seocho-gu, Seoul
⢠Parking available (1h free with treatment)
Representative: Eun Sol Lee
Privacy Officer: Eun Sol Lee
Business Registration Number: 470-03-03420
Phone: +82-507-1345-5928
Email: info@seyeclinic.com
Opening Hours: Weekdays/Evening Clinic 10:30-21:00 (reservation cutoff 19:00), Weekends/Public Holidays 10:30-19:00 (reservation cutoff 17:00)
Copyright Ā© 2026 SEYE CLINIC. All Rights Reserved.