An “FDA-approved device” in lifting ads: what does it mean, and what does it not mean?
You have probably seen “FDA-approved device” in lifting ads. It sounds as if the results have been verified. Open the actual filing, though, and it often says something different from what you expect. Here is what to check.
The short answer
“FDA-approved” on a lifting device usually means 510(k) clearance. That pathway shows a device is substantially equivalent to one already sold in the US, so it does not by itself mean the lifting effect was proven clinically. “Approval”, which reviews clinical data, is a different pathway called PMA. What matters is the indication in the filing. XERF’s 510(k) (K251327) indication was electrocoagulation and hemostasis, while Thermage’s 2002 510(k) (K021402) included non-invasive treatment of periorbital wrinkles. At Miso Clinic, 4F Bombom Building, 125 Dongdeok-ro, Jung-gu, Daegu (Exit 1, Kyungpook Nat'l Univ. Hospital Station), +82-53-428-2700, when we introduce a device, we keep Korean approval and US registration separate.
How is “approval” different from “clearance”?
| Item | 510(k) | PMA |
|---|---|---|
| Term used | cleared | approved |
| What it shows | Substantial equivalence to a device already on the market | Safety and effectiveness themselves |
| Clinical trials | Often not required | Usually required |
| RF lifting devices | Usually this pathway | Rare |
So the accurate phrase is “FDA 510(k)-cleared device”. Korean ads saying “FDA-approved” often mix up the two.
Why does the indication for use matter?
A 510(k) filing states in one sentence “what this device is used for”. That sentence matters more than the fact of US registration. It tells you whether lifting, firmness or wrinkles are listed, or just a surgical-instrument use such as “electrocoagulation and hemostasis”.
| Device | US registration | Indication |
|---|---|---|
| Thermage (ThermaCool TC) | 510(k) K021402, 2002-11-05 | Electrocoagulation and hemostasis + non-invasive treatment of periorbital wrinkles |
| XERF | 510(k) K251327, 2025-08 | Electrocoagulation and hemostasis (no clinical trial submitted) |
| Density, Oligio Kiss | Not found | — approved as medical devices by Korea’s MFDS |
A company announcement states that in 2007 Thermage’s indication was broadened to periorbital wrinkles including the upper and lower eyelids. XERF is in the same monopolar RF family, but its US filing lists electrocoagulation and hemostasis. That does not mean XERF has no lifting effect. It means the US filing did not address lifting effect.
What does “FDA-approved” not mean?
- The size of the effect — a 510(k) does not review how much lift you get
- Being better than other devices — it is not the result of comparing devices
- Approval in Korea — use in Korea needs separate approval from Korea’s MFDS
- Every area and every use — it covers the scope written in the indication
Equally, having no US registration does not make a device a bad one. For devices made in Korea, Korean approval is the standard, and there may have been no need to file in the US.
How can I check for myself?
- US — search the FDA 510(k) database by device name or K number (K followed by six digits) and read the “Indications for Use” sentence
- Korea — search the MFDS medical device online service by product name or approval number and read the intended use. Oligio Kiss appears under its approved name, “The Great RF Sonata”
- At consultation — ask “Which country is it registered in, and what is the indication?”
How to read an approval number is covered in detail in How to look up an approval number.
So what should I choose a device by?
Approval is the starting line that says “it may be used”; the basis for choosing is something else. It is the condition of your face (skin thickness, depth of sagging, hollowing), the size and limits of the human research on each device, and how much experience the clinician has with it.
The differences between the three devices and how to choose are set out in XERF, Density and Oligio Kiss: 10 questions.
FDA-approved devices: frequently asked questions
If a device is FDA-approved, are the results certain?
No. Lifting devices are usually 510(k) cleared, a pathway showing substantial equivalence to a device already on the market. It does not review the size of the effect.
Is XERF FDA-approved?
It has a US 510(k) registration, K251327, from August 2025, with the indication electrocoagulation and hemostasis. No clinical trial data was submitted.
Do Density and Oligio Kiss have FDA registration?
As far as I checked, I could not find a US 510(k) listing for either. Both are medical devices approved by Korea’s MFDS.
Where can I get a lifting device consultation in Daegu?
At Miso Clinic, 4F Bombom Building, 125 Dongdeok-ro, Jung-gu, Daegu (Exit 1, Kyungpook Nat'l Univ. Hospital Station), +82-53-428-2700, where XERF, Density and Oligio Kiss are available. Weekdays 11:00–19:00, Saturday 10:00–16:00, closed Sundays and public holidays.
Read next
Product pages
Device information: XERF · Density · Oligio Kiss
Who wrote this
Written and reviewed by Lee Chi-Hak, MD, director of Miso Clinic, Daegu. The treatment standards and injection design set out here are the ones we use in practice.
| Medical director | Lee Chi-Hak, MD |
|---|---|
| Address | 4F Bombom Building, 125 Dongdeok-ro, Jung-gu, Daegu, South Korea · Exit 1, Kyungpook National University Hospital Station |
| Phone | +82-53-428-2700 |
| Hours | Weekdays 11:00–19:00 (lunch 13:00–14:00) / Saturday 10:00–16:00 (no lunch break) / Closed Sundays and public holidays |
| Columns | All clinical columns |
| Reference library | All booster and device references |
References
- US medical device pathways — a 510(k) is a notification showing a device is “substantially equivalent” to one already on the market, and the outcome is described as cleared. PMA, for high-risk devices, reviews clinical data on safety and effectiveness, and the outcome is described as approved. The indication wording can be read by K number in the US FDA 510(k) database.
- US FDA 510(k) K021402 — Thermage ThermaCool TC System, decision 2002-11-05, indications “electrocoagulation and hemostasis in dermatologic and general surgical procedures” and “non-invasive treatment of periorbital wrinkles”. A company announcement states that on 2007-06-18 the indication was expanded to periorbital wrinkles including the upper and lower eyelids.
- US FDA 510(k) K251327 — XERF, August 2025, indication electrocoagulation and hemostasis, no clinical trial data submitted (Miso Clinic XERF material).
- Korean approvals — Oligio Kiss is approved by Korea’s MFDS under the name The Great RF Sonata (Wontech, 2023-09-01); XERF is classified in Korea as a general-purpose electrosurgical unit; Density is an MFDS-approved medical device (Miso Clinic device material). I could not confirm a US 510(k) listing for Density or Oligio Kiss.
- Korean medical advertising law — Korean Medical Service Act Article 56(2) (no treatment testimonials, no comparisons with other clinics, no superlatives). This is why this column carries no prices, reviews or before-and-after photos.
Everything in this column is general information and does not replace medical diagnosis or treatment. Effects and side effects vary with individual skin condition, age and underlying illness, and the same result is not guaranteed for everyone. Any decision to proceed should be made in an in-person consultation with a physician.