Oligio and Thermage® FLX both use 6.78MHz monopolar (unipolar) RF to deliver heat to the dermis and induce collagen remodeling—the principle is the same. The difference lies in the detailed design of the devices. Thermage® FLX is a 4th-generation device developed in the U.S., featuring an algorithm (AccuREP™) that measures skin impedance in real time for each shot and automatically adjusts energy, along with a wider tip area. Oligio is a Korean monopolar RF device released in 2020, using the same frequency band while enhancing procedural comfort with features like a vibrating handpiece.
| Category | Thermage® FLX | Oligio |
|---|---|---|
| Energy type | 6.78MHz monopolar RF | 6.78MHz monopolar RF |
| Origin | Imported (U.S.), 4th generation | Korean, released in 2020 |
| Characteristics | Real-time energy correction (AccuREP™), accumulated clinical data | Vibrating handpiece, relatively lower cost |
In other words, it is not a question of "which one is RF," but rather that within the same principle, the precision of energy delivery, verification history, and cost structure differ. How these differences affect actual results depends on skin thickness and degree of sagging, so a diagnosis comes first.




