Is Eye XERF a different machine?
More people are searching for the price of “eye XERF”. It is not a separate device. It is the name for fitting a small eye effector to the same XERF system. Here is what a small tip changes, and what it does not.
The short answer
Eye XERF is not a different machine. It is XERF, a single radiofrequency system, used with a small effector made for the eye area. XERF has four effectors; the small ones are the i05 at 5 × 10 mm (50 mm²) with 400 shots and the i10 at 10 × 10 mm (100 mm²) with 300 shots. A small tip is used around the eyes not because it is a better tip but because the eye area has the thinnest dermis on the face and is narrow and curved, so a large tip does not sit evenly on it. Miso Clinic in Daegu uses the XERF i05 effector around the eyes. Miso Clinic is at 4F Bombom Building, 125 Dongdeok-ro, Jung-gu, Daegu, in front of Exit 1 of Kyungpook National University Hospital station. Phone 053-428-2700. Weekdays 11:00–19:00, Saturday 10:00–16:00 with no lunch break, closed Sunday and public holidays.
Why it looks like another machine
A separate name makes it read like a separate device. It is the same mix-up as “Density Alpha”: both are tip names, not device names. Three things feed the confusion.
- Prices are quoted per tip. “Eye XERF, so many shots” looks like a product name but records which effector is used.
- A different tip feels different. Around the eyes especially, so it is remembered as a different treatment.
- Radiofrequency devices are defined largely by their tips. Density splits into ALPHA, Eye, Face and Body, and Thermage has separate EYE and TOTAL tips. Thermage appears only because its tip specification is public; Miso Clinic does not have Thermage.
The four XERF effectors
| Effector | Tip area | Sealed shots | Area × shots | Typical site (clinical judgement) |
|---|---|---|---|---|
| XERF i05 | 5 × 10 mm = 50 mm² | 400 | 20,000 mm² | Narrow, thin sites such as the eye area |
| XERF i10 | 10 × 10 mm = 100 mm² | 300 | 30,000 mm² | Small surfaces |
| XERF E40 | 20 × 20 mm = 400 mm² | 600 | 240,000 mm² | Broad areas of the face |
| XERF E60 | 20 × 30 mm = 600 mm² | 600 | 360,000 mm² | The broadest areas |
The shot count is the number sealed into the tip, not a recommendation for how many to use around the eyes. Tips are single-use and stop when the count runs out.
On shot count alone, 400 for the i05 and 600 for the E60 look close. By nominal area, the i05 covers 20,000 mm² and the E60 360,000 mm², an eighteen-fold difference. A lower shot count around the eyes means a smaller area, not less treatment. Nominal area is our own calculation of tip area times shots; real coverage is smaller because passes overlap.
Is a small tip stronger, or shallower?
You may have heard both. They describe different things.
- Intensity — at the same current, a smaller electrode gives a higher current density, and tissue heating rises with the square of current density. So a small tip heats a narrow spot harder. That is basic electrosurgery, not a cosmetic claim.
- Depth — physics and measurements from other clinical fields point the other way: larger electrodes go deeper. In cardiac ablation 8 mm electrodes made deeper lesions than 4 mm ones, and in pain medicine moving from a 22G to a 16G needle widened lesions by 58 to 65%. One in vitro study found the opposite.
This is where we stop. We found no study that measured depth by tip size in human skin. The only human study that compared tip sizes (a monopolar device other than XERF, 3 cm² versus 4 cm², split-face in 31 people) found no statistically significant difference between the two tips (p=0.845). Its conclusion is nonetheless worded as if they differ.
So the real test when choosing a tip is not how many millimetres it reaches but whether it sits evenly on that area.
The real reason for a small tip around the eyes
Contact. Three things combine.
- Thin. The eye area has the thinnest dermis on the face. Tiny differences show up as shadow and show-through.
- Narrow. Put a 20 × 30 mm tip on the eye area and most of it lands outside the eye area.
- Curved. A large flat tip touches a curve on one side and lifts on the other. Where the tip lifts, radiofrequency simply does not go in.
So eye XERF is less “doing XERF on the eyes too” and more “switching to a tip that actually touches the eye area”.
Miso Clinic in Daegu uses the XERF i05 effector around the eyes. We more often continue the eye area as part of a full-face plan than treat it on its own, because treating the eyes alone can leave a visible edge between the eye area and the cheek. This is clinical judgement at Miso Clinic, not a rule from a comparative trial.
What to ask at a consultation
If a price list only says “eye XERF, so many shots”, these three questions help.
- Which effector, and how many shots?
- Is it the eyes alone, or the eyes continued from a full-face treatment?
- Is that shot count one tip, or part of a tip shared with other areas?
The second matters most for the result. The third is worth asking because market numbers usually fall on multiples or fractions of the sealed tip counts (400, 300, 600).
Summary — what is established and what is not
Established
- Eye XERF is XERF with an eye effector, not a separate device
- XERF effectors carry i05 400, i10 300, E40 600 and E60 600 shots (manufacturer data)
- A smaller electrode raises current density and heats a narrow spot harder
- Miso Clinic in Daegu uses the XERF i05 effector around the eyes
Not established
- Human skin measurements of depth reached by tip size
- A difference in effect between tips — the only human comparison was not significant (p=0.845)
- XERF human data on the eye area alone
Eye XERF: frequently asked questions
Is eye XERF a different machine from XERF?
No. It is the same XERF system used with a small effector made for the eye area.
How many shots is eye XERF?
It depends on the effector. The i05 is sealed at 400 shots and the i10 at 300. That is the tip specification, not a recommended dose for the eyes.
The eye shot count is low. Am I getting less treatment?
The area is smaller. The i05 covers a nominal 20,000 mm² and the E60 360,000 mm², eighteen times more. Shot count follows area.
Why not use a large tip around the eyes?
A large tip does not sit evenly on the narrow, curved eye area, and where the tip lifts no radiofrequency goes in.
Is a small tip stronger?
At the same current a narrower electrode has higher current density, and heating rises with its square. Depth, though, points toward larger electrodes in other fields, and the only human study comparing tip sizes found no significant difference between tips (p=0.845).
Which effector does Miso Clinic use around the eyes?
The XERF i05 effector. We more often continue the eye area from a full-face plan than treat it alone.
Where can I get an eye-area RF consultation in Daegu?
Miso Clinic is at 4F Bombom Building, 125 Dongdeok-ro, Jung-gu, Daegu, in front of Exit 1 of Kyungpook National University Hospital station, phone 053-428-2700. Open weekdays 11:00 to 19:00 and Saturday 10:00 to 16:00, closed Sunday and public holidays.
Read next
Product pages
Product pages: 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
- XERF effector specifications — Lutronic published data: i05 5 × 10 mm (400 shots) · i10 10 × 10 mm (300 shots) · E40 20 × 20 mm (600 shots) · E60 20 × 30 mm (600 shots). The electrode pattern dimensions in US FDA 510(k) summary K251327 (05 Tip 9 × 4.5 mm and so on) differ, and we could not confirm which describes the true conducting area. Areas in this column follow the manufacturer’s published specification.
- The same shot count is a different dose with a different tip — nominal area is tip area × shot count, and real coverage is smaller because passes overlap by 15-30%. Yang YS et al., J Clin Aesthet Dermatol 2024;17(2):20–22 (3 versus 4 cm², 300 shots per side) · Suh DH et al., Lasers Med Sci 2025;40:530 (0.25 cm² eye tip, 225 shots per lid). Nominal area is our own calculation and appears in no paper.
- A shot is a sealed specification — US FDA GUDID entries and each manufacturer’s published data. The 300 / 600 / 900 sold in the market fall out as multiples and combinations of those specifications. It is a consumable unit, not a clinically defined dose.
- Current density and electrode area — established principle — Li AA, Zhou MJ, Hwang JH. Gastrointestinal Endoscopy Clinics of North America 2023;33(1):29–40, DOI 10.1016/j.giec.2022.07.001: “temperature in tissue rises as a square of the current density”. At the same current, a smaller electrode gives a higher current density. This is textbook electrosurgery.
- “Larger electrodes reach deeper” — measurements from other fields — Otomo K et al., J Cardiovasc Electrophysiol 1998;9(1):47–54, PMID 9475577 (8 mm electrodes made deeper lesions than 4 mm) · Cosman ER Jr et al., Pain Medicine 2014;15(12):2020–2036, PMID 25312825 (going from 22G to 16G widened lesions by 58–65%). There is a counter-example — Linhart M et al., Europace 2009;11(5):565–570, PMID 19251707 (in vitro liver tissue, the larger electrode was not deeper). None of these is skin.
- The only human study comparing tip sizes — Yang YS, Kim DH, Ha JH et al., J Clin Aesthet Dermatol 2024;17(2):20–22, PMID 38444428. A monopolar RF device other than XERF, 3 cm² versus 4 cm² tips, split-face in 31 people. The between-tip comparison reported in the text was p=0.845, not significant; the p<0.001 figures are before-versus-after. The authors’ conclusion nonetheless reads as if the tips differ. Temperature and depth were not measured.
- What we could not find — a human measurement of depth or temperature by tip area, a human study comparing eye tips with face tips on the eye area, and XERF human data on the eye area alone.
- Thermage tip specifications — Solta Medical, US FDA GUDID entries TT0.25F6-450 = eye tip 0.25 cm², 450 pulses; TT4.00F6-600 = TOTAL tip 4.0 cm², 600 pulses. Included because the specification is public. Miso Clinic does not have Thermage.
- Medical advertising law — Medical Service Act of Korea, Article 56(2), which prohibits testimonial advertising, comparison with other clinics, superlative claims and advertising that guarantees or implies a guaranteed treatment effect. That is why this column reports mechanisms and data without ranking devices.
- Miso Clinic practice guidance — indication criteria, site-by-site design, and the explanation and consent procedure. This is the source for every sentence marked as clinical judgement.
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.
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