Note №31REGULATORY RECORD
Four Korean RF devices sold as skin tightening carry United States clearances. Read the cleared sentence and it says electrocoagulation and hemostasis — the surgical control of bleeding. Here is the exact wording of each, and what it does and does not tell you.
You are sitting in a consultation room in Gangnam. The 상담실장 (sangdamsiljang) — the consultation manager, the one who quotes the price, and not the doctor — turns a tablet toward you. On the screen is a device you have never heard of: 볼뉴머 (Volnewmer), or 덴서티 (DENSITY), or 올리지오 (Oligio), or 텐써마 (10THERMA). Under the product photograph, in English, are two words you recognise: FDA cleared.
Those two words are true. You can look the clearance up yourself in ten minutes, and this article will show you how. But the sentence the FDA actually cleared does not contain the words lifting, tightening, wrinkle, or skin laxity. For three of these four devices, it contains only this: electrocoagulation and hemostasis — burning tissue closed, and stopping bleeding.
What is actually inside an FDA clearance?
A 510(k) clearance is a finding that a new device is substantially equivalent to one already legally on the US market. It is not a finding that the device works.
Every clearance carries one short, formal sentence called Indications for Use. That sentence — not the brochure, not the clinic’s website — is the legal description of what the device is cleared to do. It is published as a PDF on the FDA’s own server, and anyone can read it.
This matters because “cleared” and “approved” are different things, and Korean clinic marketing in English uses them interchangeably. We have written before about what a Korean clinic menu is actually listing, and about treatments where the FDA approval count is zero.
What were the four Korean devices cleared for?
Here is the Indications for Use text, quoted exactly, from each clearance document.
| Device | 510(k) | Cleared | Indications for Use — verbatim |
|---|---|---|---|
| 볼뉴머 Volnewmer (CLASSYS) | K240248 | 29 Apr 2024 | “Volnewmer™ is intended for use in dermatologic procedures for electrocoagulation and hemostasis of soft tissue.” |
| 덴서티 DENSITY (Jeisys Medical) | K230663 | 14 Aug 2023 | “DENSITY indicated for use in dermatologic and general surgical procedures for electrocoagulation and hemostasis.” |
| 올리지오 X Oligio X (Won Tech) | K240313 | 22 Feb 2024 | “The ‘Oligio X is intended for use in dermatologic and general surgical procedures for non-invasive electrocoagulation and hemostasis of soft tissue.” |
| 텐써마 10THERMA (Tentech) | K232992 | 20 Dec 2023 | “10THERMA indicated for use in dermatologic and general surgical procedures for electrocoagulation and hemostasis.” |
Four devices, four different manufacturers, four clearances issued inside nine months of each other. Not one of the four sentences mentions a wrinkle.
Why does Thermage have wrinkle indications when these do not?
Because Thermage was cleared for them separately, and the devices that cite it did not ask for the same list.
써마지 (Thermage) FLX, made by Solta Medical, was cleared in 2017. Its Indications for Use is long, and it says this explicitly:
“Non-invasive treatment of periorbital wrinkles and rhytids including upper and lower eyelids; Non-invasive treatment of wrinkles and rhytids.”
The mode that applies RF and vibration at the same time adds “Temporary improvement in the appearance of cellulite,” relief of minor muscle aches, relief of muscle spasms, and temporary improvement of local circulation.
Three of the four Korean devices name Thermage FLX (K170758) directly as their predicate device: Volnewmer, DENSITY, and 10THERMA. The fourth, Oligio X, names an earlier Won Tech model, The Oligio (K221989, cleared 13 Oct 2022) — and that clearance names Thermage FLX. So the lineage reaches Thermage in every case; for Oligio X it takes one extra step.
A predicate is an ancestor, not an inheritance. Citing a device does not transfer that device’s indication list to yours. We could not find an FDA statement explaining why these four sought the narrower wording, and we are not going to guess at the reason.
Is InMode different?
Yes — and not in the way you would expect. 인모드 (InMode) is not one device. It is a console with interchangeable handpieces, and each handpiece was cleared for something different under a single 2022 clearance.
| Handpiece | Indications for Use — verbatim |
|---|---|
| Forma (Plus, Plus90, Plus-Plus) | “indicated for the temporary relief of minor muscle aches and pain, temporary relief of muscle spasm, and temporary improvement of local blood circulation.” |
| Morpheus8 | “intended for use in dermatological procedures for electrocoagulation and hemostasis.” |
| Fractora 3D | “intended for use in dermatologic and general surgical procedures for electrocoagulation and hemostasis.” |
| FaceFX (WMFace) | “intended for use in dermatologic procedures, for noninvasive treatment of mild to moderate facial wrinkles and rhytids.” |
| BodyFX | “…Relief of minor muscle aches and pains, relief of muscle spasm, temporary improvement of local blood circulation. Temporary reduction in the appearance of cellulite.” |
Forma is one of the handpieces sold in Korea as a lifting treatment. In its US clearance it is a muscle-ache and blood-circulation device. Morpheus8, the most internationally famous name on this list, is cleared for electrocoagulation and hemostasis. FaceFX is the only handpiece in the table whose cleared sentence contains the word “wrinkles.”
If a clinic tells you the machine is FDA-cleared, that statement can be true while the specific handpiece being used on your face is cleared for something else entirely.
Does this mean the devices do not work?
No. This article does not say that, and cannot.
Three things are true at once, and they need to be kept apart:
- In the United States, using a device outside its cleared indications is lawful. A licensed physician there may use a cleared device for a purpose the clearance does not list; this is ordinary medical practice, not a violation. We did not verify how Korea treats off-label device use, and we make no claim about it here.
- A clearance is not an efficacy verdict. A 510(k) says a device is substantially equivalent to an earlier one. The absence of a wrinkle indication is not evidence that a device fails to tighten skin. It is evidence about a regulatory filing, and nothing more.
- We did not check Korean approvals. These devices are used in Korea under Korean regulation, and 식약처 (MFDS) — Korea’s drug and device authority — makes its own determinations. We did not look up what any of these devices are approved for in Korea, and nothing here should be read as a claim about their Korean status.
What this article says is narrower, and we think more useful: the two English words on the tablet do not mean what a foreign patient reasonably assumes they mean, and the document that says what they do mean is free, public, and four clicks away.
What can you ask before the treatment?
Ask for the exact model name in English, not the Korean product name. The two often differ, and a device sold under one name in Korea may be exported under another — we have written about what happens to device names at the border.
Then, if the clinic has told you the device is FDA-cleared:
- Ask for the K-number. Every clearance has one, in the format K + six digits. A clinic making the claim should be able to produce it.
- Read the sentence yourself. Search the K-number at
accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm, then open the linked PDF and find “Indications for Use.” It is one paragraph. - For InMode, ask which handpiece. The console clearance and the handpiece clearance are not the same question.
- Ask what the device is approved for in Korea. That is the regulation you are actually being treated under. We did not research this; the clinic can tell you, and 식약처 maintains the record.
None of this makes a treatment better or worse. It changes what you are agreeing to — from a marketing phrase to a document you have read.
Common questions
Is “FDA-cleared” the same as “FDA-approved”?
No. Clearance (510(k)) is a finding of substantial equivalence to an existing device. Approval (PMA) is a separate, much heavier review pathway. Korean clinic marketing in English frequently uses “approved” where the record says “cleared.”
Does electrocoagulation and hemostasis mean the device is a surgical tool?
It means the cleared use is burning tissue closed and stopping bleeding. Whether a given device is also effective for skin tightening is a separate question that the clearance document does not answer either way.
Are these devices unsafe?
Nothing in this article supports that conclusion. A narrow indications statement is a fact about a regulatory filing, not a safety finding. We did not review any safety data.
Are these devices unapproved in Korea?
We do not know. We did not check the 식약처 (MFDS) record for any of them. Do not read a US clearance’s wording as a statement about Korean approval.
Which lifting device should I choose?
We do not make treatment recommendations and will not start here. What this article gives you is a way to check one specific claim — the FDA one — against its source.
Sources
All FDA documents accessed 19 August 2026.
- Volnewmer, K240248 (CLASSYS Inc., cleared 29 April 2024) — https://www.accessdata.fda.gov/cdrh_docs/pdf24/K240248.pdf
- DENSITY, K230663 (Jeisys Medical Inc., cleared 14 August 2023) — https://www.accessdata.fda.gov/cdrh_docs/pdf23/K230663.pdf
- Oligio X, K240313 (Won Tech Co., Ltd., cleared 22 February 2024) — https://www.accessdata.fda.gov/cdrh_docs/pdf24/K240313.pdf
- The Oligio, K221989 (Won Tech Co., Ltd., cleared 13 October 2022) — https://www.accessdata.fda.gov/cdrh_docs/pdf22/K221989.pdf
- 10THERMA, K232992 (Tentech Inc., cleared 20 December 2023) — https://www.accessdata.fda.gov/cdrh_docs/pdf23/K232992.pdf
- Thermage FLX System, K170758 (Solta Medical Inc., cleared 22 September 2017) — https://www.accessdata.fda.gov/cdrh_docs/pdf17/K170758.pdf
- InMode Multi System, K221571 (InMode Ltd., cleared 30 June 2022) — https://www.accessdata.fda.gov/cdrh_docs/pdf22/K221571.pdf
- FDA, Premarket Notification 510(k) — https://www.fda.gov/medical-devices/premarket-submissions-selecting-and-preparing-correct-submission/premarket-notification-510k
- FDA 510(k) Premarket Notification database — https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm
The clearance sentence is one half of what a clinic tells you about a machine. The other half is the number on the quote — and a Korean lifting price is counted in shots, not treatments.
The Clinic Notes — verified, source-cited information on cosmetic medicine in South Korea. We accept no payments or benefits from clinics, hospitals, doctors, or referral agencies.
Leave a Reply