This content was created in compliance with related laws including the Medical Practice Act.
Author: Seo Bit-na, Chief Director (Plastic Surgeon / Beutiful story clinic)
Let me answer what Coolsonic is in 3 lines first
① Coolsonic = HIFU (High-Intensity Focused Ultrasound) + Contact Cooling System
② While stimulating the SMAS layer with ultrasound, the skin surface is simultaneously protected through cooling
③ The pain burden is lower compared to conventional HIFU, allowing treatment to be possible without anesthetic cream in some cases
Coolsonic is, in short, "cooling + HIFU." While cooling the skin surface, high-intensity focused ultrasound is delivered to three different depths below the skin surface—1.5, 3.0, and 4.5mm—to create thermal coagulation points at those layers and induce tissue contraction for a lifting effect.
According to Rapportian reporting, Coolsonic is designed with a Peltier-based contact cooling system that lowers the skin surface temperature while delivering ultrasound energy, reducing heat sensation and pain burden. Thanks to this cooling principle, the pain sensation in nerve endings becomes dulled, making the treatment process relatively smoother compared to conventional HIFU series treatments.
According to official Coolsonic information, this equipment has a mechanism that selectively coagulates subcutaneous and SMAS layer tissue through focused ultrasound energy, thereby inducing collagen and elastic fiber regeneration. It is the latest non-invasive lifting equipment that received MFDS approval in February 2025.
However, Coolsonic does not replace Ultherapy in all cases. Since the response and suitability differ depending on individual skin thickness, degree of sagging, and pain sensitivity, reactions can vary depending on constitution and symptom severity.
How do Ultherapy and Coolsonic differ?
Both devices are HIFU series lifting treatments that transmit heat energy to deep layers of skin through ultrasound to induce collagen response. However, they differ in energy delivery method and the experience during treatment.
| Classification | Ultherapy | Coolsonic |
|---|---|---|
| Core Technology | DeepSEE™ Real-time Ultrasound Imaging-based HIFU | Contact Cooling + HIFU |
| SMAS Layer Targeting | ✅ | ✅ |
| Pain During Treatment | Relatively Strong (anesthetic cream·sedation anesthesia recommended) | Reduced by cooling (treatment without anesthesia possible in some cases) |
| Downtime | Possible soreness and minor swelling for several days | Relatively smooth return to daily life immediately after treatment |
| Effect Duration | Typically 6 months to 1 year | Typically 6 months to 1 year (peak perception around 1-3 months post-treatment) |
| Special Features | Delivers precise energy while confirming skin structure through imaging | Favorable for detailed access to curved areas and managing wide surface areas |
According to related clinical data, Ultherapy uses DeepSEE™ technology to create strong thermal coagulation points at 1.5, 3.0, and 4.5mm depths while confirming the internal skin structure in real-time through imaging. Because of this, it can avoid areas where volume needs to be maintained and intensively target layers with sagging, but since the thermal coagulation points form strongly, considerable heat sensation can be felt during treatment.
In contrast, Coolsonic maintains the handpiece itself in a cold state through a contact cooling structure, dulling the pain sensation of nerve endings while delivering ultrasound energy. The Medisobizanews report also introduces how this cooling system contributes to reducing discomfort during treatment compared to conventional HIFU.
The effect duration is similar for both devices, typically around 6 months to 1 year. With Coolsonic, the most distinct perception tends to appear as collagen regeneration becomes active around 1-3 months post-treatment. However, if sagging is pronounced and there is some fatty tissue, Ultherapy's strong thermal coagulation may be more suitable, and if you are pain-sensitive or want to evenly manage a wide surface area, Coolsonic can be considered.
Why Beutiful story clinic operates both Coolsonic and Ultherapy
Even within the same HIFU series, the experience varies greatly depending on "what energy, at what depth, and in what sequence" is used. Since sagging angle, fat distribution, and skin thickness differ from person to person, applying just one device uniformly can result in unnecessary inconvenience.
From a plastic surgery perspective, sagging angle and fat distribution must be assessed, and from a skin treatment perspective, both epidermal protection and collagen response induction methods must be considered together. Only when both perspectives can be handled simultaneously can we determine "whether Coolsonic alone is suitable for this person, whether combination with Ultherapy is necessary, or whether adding Density Noir is the right choice."
At Beutiful story clinic, a plastic surgeon with 15 years of experience, Seo Bit-na, conducts direct diagnosis using a specially developed facial precision imaging device and proposes personalized 1:1 treatment plans by using Ultherapy, Coolsonic, and Density Noir individually or in combination.
• Determine which layer to prioritize targeting from a plastic surgery perspective (sagging angle, volume distribution)
• Decide energy intensity and whether cooling is necessary from a skin treatment perspective (epidermal protection, collagen response induction)
• Operate on a non-factory-style 1-person reservation system with only one appointment per hour, securing sufficient diagnostic time
Skin suitable for Coolsonic vs. Skin suitable for Ultherapy — Which one am I?
First, examine which direction is more suitable for you using the checklist below. Make a final decision only after consulting with medical staff, and remember that reactions may differ depending on constitution and symptom severity.
• Coolsonic may be more suitable in these cases
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If you've had previous HIFU treatment experience where the pain was too severe
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If you want to intensively manage curved or thin fat layer areas such as the eyes, forehead, and neck
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If you need to return to daily life immediately after treatment (less downtime)
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If you want to evenly manage overall skin elasticity and texture across a wide area
According to Rapportian reporting, Coolsonic's 3-stage depth adjustment function at 1.5~4.5mm enables detailed access even in thin fat and curved areas, making it advantageous for delicate area treatments like the eyes or forehead.
• Ultherapy may be more suitable in these cases
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If jawline, double chin, and deep cheek sagging are pronounced and there is some fatty tissue
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If you want precise treatment while confirming skin structure through imaging
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If you're willing to tolerate some discomfort and expect strong lifting effects
• Cases that must be confirmed with medical staff before treatment
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If you are pregnant or breastfeeding
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If you have metal implants in the treatment area
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If you have skin infections, wounds, or active inflammation
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If you have a history of previous filler or thread lifting procedures (depth design adjustment necessary)
Those residing near Sinsa Station, Apgujeong, or Cheongdam can also conveniently visit Beutiful story clinic in Nonhyeon-dong on foot or by public transportation.
If you're considering Coolsonic near Nonhyeon Station, try choosing based on these criteria
Before the device name, it's important to first consider "Is this energy combination suitable for my current sagging pattern and pain sensitivity?" This is the starting point of slow aging. Since HIFU series treatments can show different results depending on energy combination, shot placement, and medical staff expertise, "who designs it and on what basis" is a more important variable than the device itself.
Beutiful story clinic, located in Nonhyeon-dong, is a place that provides honest 1:1 customized beauty plans without unnecessary procedures. With a non-factory-style 1-person reservation system caring for only one person per hour, you can directly discuss with Chief Director Seo Bit-na whether Coolsonic or Ultherapy is the right choice for your current skin.
At Beutiful story clinic, which applies the same fees to domestic and international patients and designs natural anti-aging with delicate aesthetic sense, directly experience what a slow aging plan tailored perfectly to your skin looks like.
Be sure to check these things before visiting Nonhyeon for Coolsonic and Ultherapy
Q1. Do I really need to apply anesthetic cream for Coolsonic?
The contact cooling system continuously keeps the skin surface cold during treatment, reducing the pain sensation stemming from heat sensation. Because of this, treatment can be possible without anesthetic cream in some cases. However, there are differences depending on individual pain sensitivity and the treatment area, so it's good to consult with medical staff beforehand to decide.
Q2. How long does the effect last after one Coolsonic treatment?
Some people feel immediate tightening right after treatment, and others tend to notice the most distinct effect around 1-3 months as collagen gradually regenerates. The maintenance period is typically around 6 months to 1 year, with individual variations depending on skin condition, lifestyle habits, and the number of shots.
Q3. I stopped Ultherapy treatment because the pain was too severe. Is it okay to switch to Coolsonic?
Coolsonic has a structure that dulls pain sensation of nerve endings through contact cooling, so those who struggled with Ultherapy's heat sensation may find it more comfortable. However, since there are individual differences, it's recommended to thoroughly share your past treatment history and current skin condition with the medical staff before deciding.
Q4. Can I receive both Coolsonic and Ultherapy on the same day?
Some cases involve dividing roles by area and combining them. For example, applying Ultherapy to areas with pronounced sagging such as cheeks and jawline, and Coolsonic to thin fat layer and curved areas like the eyes and forehead. Whether to combine on the same day varies depending on individual skin condition and medical staff judgment, so always decide after prior consultation.
Reactions can differ depending on constitution and symptom severity.