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Thermage Timing Questions: Botox, Fillers, Pregnancy

Written by Delight Dermatology editorial team · Medically reviewed by Lead Dermatologist, Delight Dermatology Clinic (Korean Board-Certified Dermatologist, AAD International Fellow, ASLMS) · Last reviewed

Most timing questions about Thermage have honest, sourced answers — and a few have no published answer at all. This page separates the two, so you know which parts of the plan come from evidence and which are individualized clinical judgment.

Can you have Thermage after Botox?

There is no fixed, published waiting interval between botulinum toxin and monopolar radiofrequency. The most useful evidence is an 18-year retrospective review of 1,040 patients at two Korean dermatology clinics who combined monopolar radiofrequency or microfocused ultrasound with cosmetic injectables: among neuromodulator combinations it reported eyelid ptosis in 0.4% and paradoxical bulging in 0.1%, with no burns, infection or necrosis in any group (Suh 2025). That is reassuring, but it is retrospective evidence from two practices, not a timing protocol. In practice the sequencing is decided at consultation — bring the product name and the date of your last injection.

Can you have Thermage over dermal fillers?

This is the best-studied timing question, and the evidence points in two directions at once. In a two-part animal model, radiofrequency passes over implanted fillers produced no observed loss of filler persistence and no increase in burn risk (England 2005 — an industry-affiliated study), while part 2 measured statistically significant increases in the inflammatory, foreign-body and fibrotic responses around the filler materials and concluded that optimal timing remains undetermined (Shumaker 2006). In the 1,040-patient clinical series, surface irregularity occurred in 1.1% of hyaluronic-acid combinations and cheek asymmetry in 1.7% of PLLA combinations — and no filler migration or premature filler loss was reported (Suh 2025). The practical consequence: Thermage over fillers is common and the recorded event rates are low, but it is not claim-free territory, which is why filler type, location and injection date are part of patient selection rather than a checkbox.

Is Thermage safe during pregnancy?

Thermage has not been studied in pregnancy. There is no trial data to weigh, which is why pregnancy sits on the contraindication list of this practice and treatment is deferred — a data-absence decision, not a risk estimate. The same logic applies to breastfeeding: the honest answer is that the evidence to individualize simply does not exist.

How is sequencing actually decided?

Three pieces of information do most of the work at consultation: what was injected (product and layer), where, and when. With those, the clinician can sequence radiofrequency against your injectable schedule instead of applying a one-size interval that no published study has established. Recovery expectations after the session itself are covered in the aftercare and downtime guide.

Published references

The clinical statements on this page reflect the published literature on monopolar radiofrequency skin tightening. Citations below are primary or review sources; PubMed identifiers link to abstracts.

  1. Suh DH, Chen LC, Chung HJ, Lee SJ, Kim J. An 18-year comprehensive safety study on microfocused ultrasound and monopolar radiofrequency combined with cosmetic injectables in 1,040 patients. Archives of Dermatological Research. 2025;317(1):251. PubMed
  2. England LJ, Tan MH, Shumaker PR, et al.. Effects of monopolar radiofrequency treatment over soft-tissue fillers in an animal model (part 1; industry-affiliated study). Lasers in Surgery and Medicine. 2005;37(5):356-365. PubMed
  3. Shumaker PR, England LJ, Dover JS, et al.. Effect of monopolar radiofrequency treatment over soft-tissue fillers in an animal model: part 2. Lasers in Surgery and Medicine. 2006;38(3):211-217. PubMed