RF lifting on a face that has had filler: is it all right?
“I had filler in my nasolabial folds last year. Won’t RF melt it?” This comes up often in lifting consultations. It uses heat, so the worry is natural. I have separated what the data confirms from what I weigh up in the treatment room.
The short answer
RF lifting can usually be done on a face that has had hyaluronic acid filler. In a pig study, monopolar RF did not change the persistence of five fillers or the burn risk, and in retrospective data on 1,040 people from two Korean dermatology clinics, no burns, filler migration or early filler loss were reported with RF or focused ultrasound done alongside filler. However, if swelling or bruising from recent filler remains, if you do not know which filler you had, or if there are metal or electronic implants in the face, I postpone or do not proceed. At Miso Clinic, 4F Bombom Building, 125 Dongdeok-ro, Jung-gu, Daegu (Exit 1, Kyungpook Nat'l Univ. Hospital Station), +82-53-428-2700, we first ask when, where and with which product you had filler, and then decide the order.
Does RF heat dissolve filler?
The data says no. In a study that placed collagen, hyaluronic acid, CaHA, PLLA and silicone fillers in young pig skin, applied monopolar RF and followed for 4 months, RF was not seen to reduce filler persistence, and burn risk did not increase. If anything, a little more fibrous tissue and collagen built up around the hyaluronic acid, CaHA and PLLA.
However, this study was in pigs, not people, and one of the authors was affiliated with the maker of Thermage. It does not support saying “filler never diminishes in a human face”.
What data is there in people?
| Item | Details |
|---|---|
| Subjects | 2 dermatology clinics, 2005–2023, 1,040 people (RF 525, focused ultrasound 515) |
| Injections received alongside | Botulinum toxin 76.9%, hyaluronic acid filler 17.3%, PLLA 5.8% |
| Not reported | Infection, necrosis, burns, filler migration, earlier-than-expected filler loss |
| Reported | Surface irregularity with HA filler, 2 cases (1.1%); cheek asymmetry with PLLA, 1 case (1.7%) |
| Limitations | Retrospective chart review, two clinics, devices and intervals varied |
It is not a controlled trial, but the rarity of serious problems across records built up over many years does carry weight. I could not find a study that looked at filler combined with XERF, Density or Oligio Kiss specifically.
How are the order and interval decided?
No standard interval has been set by research. So I decide by looking at the following.
- Right after filler — if swelling, bruising or tenderness remains, RF on that area waits until it settles
- Both on the same day — swelling from RF makes it hard to judge the amount of filler, so the order is agreed in advance at consultation
- Collagen boosters (PLLA, PDLLA, CaHA) — the particles need time to settle, so the timing is considered separately
- When the filler amount still needs deciding — deciding on filler after seeing how far lifting tidies the sagging often means less filler is needed
When do I postpone RF or not do it at all?
- Metal or electronic implants in the face — no RF
- You do not know which filler you had or when, or you recall having permanent filler or silicone — examined separately
- Suspected inflammation, nodules or infection at the filler site — that problem is dealt with first
- Pregnancy, or a day with skin inflammation at the treatment area
Do filler and RF do different jobs?
| Item | Hyaluronic acid filler | RF lifting |
|---|---|---|
| What it does | Fills hollow areas | Heats the dermis to address firmness and sagging |
| When change shows | Immediately | Device measurement week 4, clinical assessment week 12 |
| Reversal | Can be dissolved with hyaluronidase | Not applicable |
| Concerns it suits | Hollow cheeks, nasolabial folds, temples | Loss of firmness, jawline sagging |
So the two do not replace each other; they share the work. Hollow cheeks call for filler first, sagging for lifting first. Many faces have both, so we often plan them together.
RF after filler: frequently asked questions
Can I have XERF or Density on a face with filler?
Usually, yes. In animal studies and Korean retrospective data on 1,040 people, no burns, filler migration or early filler loss were reported. If there is swelling or bruising right after filler, I postpone.
Does RF make filler dissolve faster?
In a pig study, RF did not reduce filler persistence. Precise measurements in people are lacking, so I do not state it as certain.
Can I have filler and RF on the same day?
Sometimes, but swelling can cloud the judgement, so the order is agreed in advance at consultation. No standard interval has been set by research.
Where can I get a filler or lifting 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. 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
- England LJ et al., Lasers Surg Med 2005;37(5):356-65 — five fillers (collagen, hyaluronic acid, CaHA, PLLA, silicone) placed in young pigs, followed by monopolar RF and 4 months of observation: no increase in burn risk, no effect on filler persistence observed. Author affiliations include the maker of Thermage. doi:10.1002/lsm.20253
- Suh DH et al., Arch Dermatol Res 2025;317:251 — retrospective chart review at two Korean dermatology clinics, 2005–2023, 1,040 people (515 focused ultrasound, 525 monopolar RF); combined injections included hyaluronic acid filler 17.3% and PLLA 5.8%. No infection, necrosis, burns, filler migration or early filler loss reported; 2 cases of surface irregularity with HA (1.1%), 1 case of cheek asymmetry with PLLA (1.7%). doi:10.1007/s00403-024-03683-w
- Miso Clinic RF columns (source of figures) — three devices compared (daegu-rf-three-devices), XERF and Thermage (xerf-thermage-difference), Density NOIR and the original Density (daegu-density-noir-vs-density), XERF and Density pain (daegu-xerf-pain · daegu-density-pain), what a shot means (rf-shot-count · daegu-xerf-600-shots), how long results last (daegu-density-xerf-duration), fat (daegu-density-xerf-fat), results timeline (when-results-show). Each column lists the original papers.
- Miso Clinic practice guidelines — XERF, Density NOIR (ALPHA and BOOST tips) and Oligio Kiss in use; no Thermage or Ultherapy; no RF with metal or electronic implants; for hollow cheeks, dissolvable hyaluronic acid filler is considered first; repeat treatment decided by the state of the face, not the calendar. The XERF ambassador role is a selection by the manufacturer, not a guarantee of results.
- 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.