Hyaluronidase or Time Freeze Laser LCLR® for pillow face: it depends on what is in the face
Medically reviewed by Dr Sin Yong · Last reviewed · 8 min read
Published 10 October 2026 · Reviewed by Dr Sin Yong
An overfilled face is one of the six concerns Dr Sin Yong treats day in, day out. The correction depends entirely on what the fullness is made of. Hyaluronic acid filler can be dissolved with ultrasound-guided hyaluronidase, selectively, so only the excess goes. Fullness from a biostimulator such as Sculptra or Ellansé does not respond to hyaluronidase at all, because there is no hyaluronic acid to act on; for that, Dr Sin Yong uses Time Freeze Laser LCLR®, which is built to target the over-stimulated areas and take away the excess. Ultrasound is how he tells the two apart before anything is injected or switched on.
Short answerHyaluronidase is used when the fullness is hyaluronic acid filler: injected under ultrasound guidance into the mapped filler so only the excess is dissolved. Time Freeze Laser LCLR® is used when the fullness comes from a biostimulator (Sculptra, Ellansé) or over-stimulated tissue that hyaluronidase cannot touch. Most faces with a long filler history have both, so the plan is often staged: dissolve the HA first, reassess, then treat what remains.
Enzyme that breaks down hyaluronic acid; placed into the mapped filler so only the excess is dissolved
Time Freeze Laser LCLR®
Dual-wavelength laser protocol built to target areas over-stimulated by Sculptra or Ellansé and take away the excess
Pick hyaluronidase when
Ultrasound shows hyaluronic acid filler in the heavy areas
Pick Time Freeze when
The fullness is biostimulator over-stimulation or tissue response, not HA
Both when
Mixed histories: HA on top of earlier Sculptra or Ellansé, which is common
Never
Blind, whole-face dissolving; refilling on the same day
Pillow face is a history, not a diagnosis
Facial overfilled syndrome rarely comes from one injection. It is the sum of small top-ups over years, often from more than one clinic, and frequently with more than one product. Hyaluronic acid filler persists far longer than is commonly assumed: MRI studies have found it in the mid-face years after the last injection (Master, Plast Reconstr Surg Glob Open 2024). Biostimulators such as Sculptra (poly-L-lactic acid) and Ellansé (polycaprolactone) work by provoking collagen, and in some faces that response over-shoots. The first job is to find out which of these the fullness is made of.
Filler draws in water and persists; biostimulators provoke collagen that can over-shoot. Schematic, not to scale.
Ultrasound-guided hyaluronidase: for hyaluronic acid
Hyaluronidase breaks down hyaluronic acid and nothing else. Published guidance recommends a small test dose for non-urgent correction, titrating to effect rather than a fixed amount, reviewing at about 48 hours and waiting at least two weeks before any refilling (King, J Clin Aesthet Dermatol 2018; Murray 2021). Dr Sin Yong maps the filler with ultrasound first and places the enzyme into the filler he can see, so the correction is targeted rather than a blanket dissolve that can leave the face hollow. Full page: filler correction and the explainer on how ultrasound-guided hyaluronidase works.
A heavy cheek is mapped before it is treated: what it contains decides the method.
Time Freeze Laser LCLR®: for what hyaluronidase cannot touch
Sculptra, Ellansé, Radiesse and the PDLLA in Juvelook cannot be dissolved by hyaluronidase, and no laser or injection “melts” them. Published management of over-correction from these products has historically relied on time, steroid injection for inflammatory nodules, and in some cases excision (Vleggaar 2014; Lemperle 2009). Time Freeze Laser LCLR® is Dr Sin Yong’s dual-wavelength protocol for this situation: together with VF Lift it is built to target the areas over-stimulated by Sculptra or Ellansé and take away the excess. Not every laser can do this. Whether it suits a particular face is decided at assessment, with ultrasound. Full page: Time Freeze Laser LCLR®.
Hyaluronidase and Time Freeze Laser LCLR® for an overfilled face
Ultrasound-guided hyaluronidase
Time Freeze Laser LCLR®
Acts on
Hyaluronic acid filler only
Over-stimulated tissue after biostimulators; excess volume
Does nothing for
Sculptra, Ellansé, Radiesse, PDLLA, fat
A face that has simply dropped (that is VF Lift)
How it is planned
Ultrasound map, test dose, titrate, review at 48 h
Ultrasound map, zone by zone laser settings
Reassessment
Two weeks minimum before any refilling
Over a course; response builds
Main risks
Over-dissolving, allergy (rare), bruising
Redness, swelling, pigment change in darker skin
Combined
Often first in mixed histories
After HA has been dissolved and the face reassessed
How Dr Sin Yong decides
History first: every product, every date, every clinic the patient can remember. Then examination at rest and smiling, and then ultrasound of the heavy areas. Hyaluronic acid has a recognisable appearance on ultrasound; biostimulator response and fat look different. If HA is present it is dissolved first, selectively, and the face is reassessed after it has settled. Only then is Time Freeze Laser LCLR® planned for what remains. Refilling on the day of dissolving is never done. Related: pillow face treatment, facial overfilled syndrome.
Fee factors
Whether ultrasound-guided dissolving, laser, or both are planned; the number of areas; and the number of sessions the examination suggests. Set out in writing after assessment. How fees are quoted.
Your next step
1. MessageWhatsApp +65 8023 7170 with what is bothering you. A reply comes from the clinic, not a bot.
2. AssessmentDr Sin Yong examines you himself at Wheelock Place, with ultrasound where earlier filler is involved.
3. A plan in writingWhat he would do, what he would not, the fee factors, and the option of no treatment.
Every treatment is performed by Dr Sin Yong personally. Singapore Medical Council registered · invited to share his clinical expertise internationally as a Key Opinion Leader for CLASSYS, DEKA, Fotona, HIRONIC and ILOODA · HSA-registered devices · ultrasound-guided correction
Only the part of it that is hyaluronic acid filler. Fullness from Sculptra, Ellansé, Radiesse or fat does not respond to hyaluronidase at all. Ultrasound tells Dr Sin Yong which applies before anything is injected.
Time Freeze Laser LCLR®, his dual-wavelength protocol, which together with VF Lift is built to target the over-stimulated areas and take away the excess. Hyaluronidase has nothing to act on with these products.
Because the aim is to remove only the excess. Ultrasound shows where the filler sits, how deep it is and whether it is hyaluronic acid at all, so the enzyme goes into the filler rather than across the whole face.
Selective, ultrasound-guided dissolving is aimed at the excess rather than at everything. If a hollow remains once the face has settled, it is reassessed after at least two weeks, not refilled on the same day.
Not usually. Hyaluronic acid is dissolved first and the face is reviewed after it settles; Time Freeze Laser LCLR® is planned for what remains.
References
King M, Convery C, Davies E. The use of hyaluronidase in aesthetic practice (v2.4). J Clin Aesthet Dermatol. 2018;11(6):E61-E68. PMID 29942426. source
Murray G, Convery C, Walker L, Davies E. Guideline for the safe use of hyaluronidase in aesthetic medicine, including modified high-dose protocol. J Clin Aesthet Dermatol. 2021;14(8):E69-E75. PMID 34840662. source
Master M, Azizeddin A, Master V. Hyaluronic acid filler longevity in the mid-face: a review of 33 magnetic resonance imaging studies. Plast Reconstr Surg Glob Open. 2024;12(7):e5934. doi:10.1097/GOX.0000000000005934. source
Signorini M, Liew S, Sundaram H, et al. Global Aesthetics Consensus: avoidance and management of complications from hyaluronic acid fillers. Plast Reconstr Surg. 2016;137(6):961e-971e. doi:10.1097/PRS.0000000000002184. source
Lemperle G, Gauthier-Hazan N. Foreign body granulomas after all injectable dermal fillers: part 2. Treatment options. Plast Reconstr Surg. 2009;123(6):1864-1873. doi:10.1097/PRS.0b013e3181858f4f. source
Wollina U, Goldman A. Spontaneous and induced degradation of dermal fillers: a review. J Cutan Aesthet Surg. 2024;17(4):273-281. doi:10.4103/JCAS.JCAS_137_23. source
