Density versus Oligio: what is the difference?
This comparison has an extra step: “Oligio” refers to three products. Which Oligio has to be settled before any comparison works.
The short answer
Density and Oligio have never been compared directly in humans. And “Oligio” means Oligio (monopolar only), Oligio X (dual-mode RF) and Oligio Kiss (RF plus focused ultrasound). Miso Clinic has Oligio Kiss. By design, Density uses monopolar then bipolar in sequence, while the Oligio unit is monopolar alone. Oligio Kiss adds focused ultrasound and becomes a candidate when sagging reaches a deeper layer that needs point-by-point coagulation. Evidence is thin on both sides with no controls: Density 16 people, Oligio 20.
The names first
| Oligio | Oligio X | Oligio Kiss | |
|---|---|---|---|
| Energy | Monopolar RF | RF (dual mode) | RF + focused ultrasound (HIFU) |
| Character | RF alone | Separate RF model | Two classes combined |
| MFDS approval name | — | — | The Great RF Sonata (2023-09-01) |
| At Miso Clinic | — | — | Yes |
Density and the Oligio unit
| Density | Oligio (unit) | |
|---|---|---|
| Maker | Jeisys Medical | Wontech |
| Mode | Monopolar → bipolar in sequence | Monopolar alone |
| Max output | 400 W | Official specs not found |
| Surface protection, correction | Gas cooling, RIC | Not found |
| Human data | 16 people, 3D measurement | 20 people (Cosmetics 2024), evaluator-blinded single arm |
| Control group | None | None |
The many “not found” entries do not mean Oligio is worse; they mean we could not locate published specifications.
Why Oligio Kiss is a separate case
RF heats a broad volume evenly; focused ultrasound places coagulation points at a fixed depth. Broad heating favours skin thickness and firmness; point coagulation favours pulling up sagging structure in the deeper layer. Oligio Kiss does both in one sitting. So for sagging that has reached the deeper layer we sometimes put Oligio Kiss ahead of Density. Again, judgement, not data.
Which treatment fits which concern
| Concern | Treatments to consider | Why |
|---|---|---|
| Thicker skin, sagging below the dermis | Density | Sequential-polarity design |
| Sagging into the deeper layer | Oligio Kiss | RF plus focused ultrasound |
| Firmness and thickness mainly | Density / XERF | Bulk RF heating |
| Thin, papery skin | Booster class first | Not the RF layer |
| Hollow cheeks | Filler class | Neither |
Which treatment is “best” is decided by the state of your skin right now, not by the product. In consultation we look first at what has been lost and what is still there, before we talk about any product name.
Frequently asked questions
Does Miso Clinic have Oligio?
Oligio Kiss, yes. Not the Oligio unit or Oligio X.
Is Oligio Kiss better than Density?
Never compared. Sagging into the deeper layer points to Kiss with its added ultrasound; otherwise Density or XERF first.
Are Oligio X and Kiss the same?
Different devices. X is an extension within RF; Kiss adds focused ultrasound to RF.
Read next
If you want to go deeper
Product page
Who wrote this
Written and reviewed by Lee Chi-Hak, MD, medical director of Miso Clinic in Daegu, South Korea. Studies are cited with their size and limitations, and where we could not find data we say so. Individual decisions need an in-person examination; this page does not replace one.
| 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 |
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| Hours | Weekdays 11:00–19:00 (lunch 13:00–14:00) / Saturday 10:00–16:00 / Closed Sundays and public holidays |
| Treatment guides | All guides |
| Comparisons | All comparisons |
| Columns | All clinical columns |
| Reference library | All booster and device references |
References
- Jeisys Medical, Density product material — sequential monopolar → bipolar RF, 6.78 MHz, up to 400 W, RIC impedance correction, five-level gas cooling, four tips (ALPHA, Eye, Face, Body). MFDS-approved medical device.
- Density human study — 16 people, 3D measurement 0.82 ± 0.36 mm, no control group.
- 2026 systematic review (15 studies, 1,230 people, one RCT) — states that no head-to-head comparison between RF devices was identified.
- Shin J et al., Cosmetics 2024;11(3):71 — Oligio, 20 people, evaluator-blinded single arm, no control. No adverse events at 600 shots, 36.6 kJ.
- Wontech Oligio Kiss — MFDS approval name The Great RF Sonata (2023-09-01), Korean launch February 2024. Monopolar RF plus focused ultrasound. Official specifications not found.
Everything on this page 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.
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