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When researching lifting procedures, you may feel confused about whether to choose Ultherapy Prime or Thermage FLX. Though the two procedures have similar names and both fall under the "lifting" category, their operating principles and the skin concerns they address are fundamentally different. In this article, I'll organize the criteria that actually matter when comparing the two procedures in Gangnam.
What's Really Different Between Ultherapy Prime and Thermage FLX?
To put it simply, the two procedures use different types of energy and work at different depths of skin layers, so the concerns they can address are inherently different.
According to clinical data published in Journal of Cosmetic Dermatology (Wiley, 2024), Ultherapy Prime concentrates high-intensity focused ultrasound (HIFU) energy in a point-like pattern at the SMAS fascia layer up to 4.5mm deep, creating microscopic coagulation points. These coagulation points trigger a kind of wound healing response, inducing collagen neogenesis and tissue contraction. This mechanism is also specified in the ClinicalTrials.gov (NCT03351335) protocol.
In contrast, Thermage FLX uses monopolar radiofrequency (RF) energy to heat the entire dermal layer in an area-based manner. You can think of it as covering breadth rather than depth in terms of energy delivery.
Here's a table summarizing the key differences at a glance.
| Classification | Ultherapy Prime | Thermage FLX |
|---|---|---|
| Energy Type | High-Intensity Focused Ultrasound (HIFU) | Monopolar Radiofrequency (RF) |
| Primary Target Layer | SMAS Fascia Layer (up to 4.5mm) | Entire Dermal Layer (area-based heating) |
| Energy Delivery Method | Point-based thermal coagulation points | Area-based uniform heating |
| Primary Effects | Sagging improvement, facial contour and jawline lifting | Elasticity improvement, pore and fine line tightening |
| Effect Onset Timing | 2-3 months after treatment | 1-2 months after treatment |
| Effect Duration | Average 1-1.5 years (varies by individual) | Average 6 months-1+ year (varies by individual) |
If your main goal is to improve sagging and contours, Ultherapy Prime may be more suitable; if your main goal is to improve skin texture, elasticity, and pores, Thermage FLX may be more appropriate. When addressing multiple concerns, combining both procedures is also worth considering. Results may vary depending on individual conditions.
Working Principles of Both Procedures and Which Skin Concerns They Address Best
Let's take a closer look at how Ultherapy Prime and Thermage FLX each work on the skin.
Ultherapy Prime — Contracts the SMAS to Lift Sagging Lines
According to clinical data from PubMed Central (2024), HIFU energy delivers heat of 65-75℃ to deep skin layers and fascia (SMAS), inducing tissue contraction and lifting effects. This temperature range is important because if it's too low, the effect is minimal, and if too high, there's risk of tissue damage, so precise energy adjustment is necessary. The core principle of HIFU is selectively heating deep layers while protecting the epidermis.
Ultherapy Prime works well for the following concerns: • Cheek sagging or double chin that bothers you • Overall facial contour feeling blurred • Jawline becoming less defined than before
Thermage FLX — Improves Skin Texture and Elasticity Through Dermal Collagen Remodeling
According to ClinicalTrials.gov (NCT06220474) data, Thermage FLX is equipped with AccuREP™ technology that measures skin resistance in real-time with each shot and automatically adjusts energy. It uniformly heats the dermal layer to around 40-45℃ to induce collagen remodeling.
Thermage FLX works well for the following concerns: • When enlarged pores feel bothersome • When skin elasticity has decreased overall • When fine lines around the eyes and mouth are concerning (eye Thermage option available) • When skin texture becomes rough or dull
Effect Onset Timing and Maintenance Period
Since both procedures are based on collagen regeneration, effects appear more over time rather than immediately after treatment. According to clinical data, Ultherapy Prime begins showing effects from 2-3 months after treatment, reaching maximum results around 3-6 months, while Thermage FLX shows collagen remodeling beginning 1-2 months after treatment with peak effects around 6 months. However, the timing of effect onset and duration may vary depending on individual skin condition and lifestyle habits.
🔖 Mini Q&A
Q. For eye area wrinkles, which is better — Ultherapy Prime or Thermage FLX? A. Eye area fine lines are fundamentally about dermal collagen remodeling, so Thermage FLX (eye Thermage) is a more direct approach. However, if combined with eye sagging, combining both procedures may be more effective, so I recommend confirming this through consultation.
Shinyu clinic's Criteria for Choosing Between the Two Procedures
Skin aging progresses simultaneously across all layers from epidermis to dermis to fascia. Clinical research on PubMed Central (2024) also mentions that treating only a single layer has limitations in addressing complex aging changes. For this reason, before choosing a procedure, it's important to first identify which layer of skin is showing more pronounced aging in your current condition.
Shinyu clinic determines treatment direction through the following process:
• Step 1. Consultation — Diagnose whether sagging or elasticity/texture improvement is the main focus If cheek, jawline, or double chin sagging is your primary concern, we focus on Ultherapy Prime; if pores, fine lines, and elasticity loss are your primary concerns, we focus on Thermage FLX.
• Step 2. For Complex Concerns — Design Level Lifting Combination When both sagging and elasticity loss occur together, the doctor designs a level lifting package combining Ultherapy Prime and Thermage FLX.
• Step 3. Procedure Execution — Verify Genuine Products and Correct Dosage At Shinyu clinic, the doctor directly executes everything from consultation to procedure completion, and confirms genuine tip opening and correct dosage usage directly in front of the patient.
• Step 4. Post-Treatment Care Guidance Provide 1:1 guidance on timing of effect onset and daily care precautions after treatment.
All treatment rooms operate as private 1-person spaces, so you can receive everything from consultation through post-treatment care in a comfortable environment.
Before Ultherapy Prime or Thermage FLX Treatment, Check These Points First
Both procedures deliver energy to the skin, so there are items that must be checked before treatment. According to related clinical data, cases falling under the following items require sufficient confirmation with medical staff beforehand.
Items Requiring Verification Before Treatment:
• ☐ Currently pregnant or breastfeeding • ☐ Active skin infection or wounds at the planned treatment area • ☐ Metal implants (metal implants, metal threads, etc.) near the treatment area • ☐ History of receiving other lifting procedures on the same area within the past 3-6 months • ☐ Thin face with little facial fat (energy settings and area design need conservative approach) • ☐ Keloid tendency or slow skin recovery
Precautions by Body Type
Particularly for thin individuals with little facial fat, applying standard energy settings as-is may result in cheek hollowing or fat atrophy after treatment. Related clinical data also mentions this as a caution point. This is why it's important to adjust energy settings delicately according to individual skin thickness and fat distribution. Results may vary depending on individual conditions.
For those seeking lifting dermatology in the Daechi-dong, Yangjae Station, and Gangnam Station areas of Gangnam, referring to this checklist and preparing it before consultation will make treatment direction decisions much smoother. Those visiting from nearby areas such as Daechi-dong lifting dermatology, Yangjae Station dermatology lifting, and Gangnam Station Ultherapy Thermage also proceed with 1:1 customized consultation.
If You're Curious About Which Lifting Procedure in Gangnam Is Right for Your Skin
At Shinyu clinic near Yangjae Station, the doctor directly designs 1:1 lifting customization just for you. You can also receive clear cost guidance through transparent procedure pricing.
Whether Ultherapy Prime or Thermage FLX is right for you, or whether receiving both procedures together would be more effective, can only be accurately determined by directly checking your current skin's degree of sagging, elasticity state, and fat distribution. Clinical data also recommends that lifting procedure satisfaction varies significantly depending on skin thickness, fat amount, and degree of sagging, so decision-making after specialist examination is recommended.
It's natural that reading alone won't give you confidence about what's better for your skin. If you come in with information about which area concerns you most and what degree of change you expect, we'll help you check the specific direction together during consultation.
Ultherapy Prime and Thermage FLX, Frequently Asked Questions
Q1. Can I receive Ultherapy Prime and Thermage FLX on the same day?
Yes, the two procedures can be performed together on the same day as they work on different skin layers. While Ultherapy Prime stimulates the SMAS fascia layer, Thermage FLX cares for the dermal layer, so they can work in a mutually complementary way. However, the sequence and feasibility vary depending on skin condition and treatment area, so I recommend confirming during consultation first.
Q2. When do effects appear and how long do they last?
Ultherapy Prime tends to begin showing effects from 2-3 months after treatment, reaching maximum results around 3-6 months, while Thermage FLX shows collagen remodeling beginning 1-2 months after treatment with peak effects around 6 months. Effect duration varies depending on individual skin condition and lifestyle habits, and many patients extend the effects through regular management.
Q3. I'm worried about pain — which of the two procedures is more painful?
Since pain sensitivity varies by individual, it's difficult to say definitively, but Ultherapy Prime may cause momentary tingling sensations during treatment due to its point-based energy delivery characteristics. If you're concerned about pain, you can choose the sleep anesthesia option, and at Shinyu clinic, an anesthesiology specialist is stationed in the treatment room during sleep anesthesia to safely monitor.
Q4. How is the number of shots (300 shots vs 600 shots) determined?
The number of shots varies depending on face size, sagging range, and treatment area (forehead, cheeks, jawline, etc.). 300 shots may be considered for partial areas or for those receiving treatment for the first time, while 600 shots may be considered for those who need comprehensive lifting. Which is more suitable for your skin will be explained during consultation after checking your current condition.
Results may vary depending on individual conditions