Under-eye lumps after Sculptra, Radiesse, Ellansé or Juvelook: why they do not dissolve, and what can be done
Medically reviewed by Dr Sin Yong · Last reviewed · 7 min read
Published 9 October 2026 · Reviewed by Dr Sin Yong
Collagen-stimulating fillers work differently from hyaluronic acid, and they behave differently when something goes wrong. Sculptra, Radiesse, Ellansé and Juvelook are not broken down by hyaluronidase, so a lump under the eye from one of them cannot be “dissolved” in the way an HA lump can. It can be assessed and managed.
Short answerLumps from Sculptra (PLLA), Radiesse (CaHA), Ellansé (PCL) or Juvelook are not dissolved by hyaluronidase. Most CaHA nodules in a large review resolved; persistent ones are managed according to what ultrasound helps show, with published options including medicines injected into the nodule. Dr Sin Yong uses Time Freeze Laser LCLR® Sculpting mode for nodules large and small, including Ellansé nodules, excess Juvelook and migrated Sculptra; he uses it under the eye too, after assessment and ultrasound.
LookalikesOften confused with hyaluronic acid lumps: the product history decides it, because a Sculptra, Radiesse, Ellansé or Juvelook lump does not soften with hyaluronidase, and ultrasound shows the material, its depth and whether it has clustered. hyaluronidase and HA lumps.
Hard lumps after filler or skin boosters, and only offered surgery? Get assessed first: cutting filler out leaves a scar and can cause dents or nerve injury. Find out how Dr Sin Yong treats them without surgery.
Why can’t these lumps be dissolved?
Hyaluronidase is an enzyme that breaks down hyaluronic acid. Poly-L-lactic acid (Sculptra), calcium hydroxylapatite (Radiesse) and polycaprolactone (Ellansé) are different materials, and the enzyme has no effect on them. They work by provoking the body to lay down collagen around the particles over months, which is also why a lump from one of them can be firm and why it may appear or change after the injection appointment. PLLA and CaHA usually persist for up to about two years and occasionally longer (Wollina, J Cutan Aesthet Surg 2024).
The under-eye is a particularly unforgiving place for these products: the skin is thin, the muscle moves constantly, and small clusters are easily seen and felt. In a review of 5,081 calcium hydroxylapatite treatments, 49% of adverse events occurred in dynamic areas such as around the eyes and mouth (Kadouch, J Cosmet Dermatol 2017).
Collagen stimulators are not hyaluronic acid. Hyaluronidase does not break them down.Illustrative image — not a patient.
How a non-HA lump is assessed
Dr Sin Yong starts with what was injected, when and how much, then examines the area at rest and in expression. Ultrasound shows whether the material is clustered or spread out, how deep it sits, whether there is inflammation around it, and whether any hyaluronic acid is also present, because many under-eyes have had more than one product over the years. The plan depends on those findings.
“A calcium or collagen filler cannot be dissolved. It can only be assessed and managed.”
Dr Sin YongOn non-HA fillers
Ultrasound shows whether the material is clustered, how deep it sits, and whether hyaluronic acid is also present.
Which collagen stimulator is in the lump, and what that changes about management
The product history decides the route, because each collagen stimulator is a different material with a different relationship to hyaluronidase and a different ultrasound appearance. The table lists the four products this page covers, what the enzyme can and cannot do to each, what the scan tends to show, and the management route Dr Sin Yong follows once the lump has been identified.
Product
Material
Does hyaluronidase act on it?
What ultrasound tends to show
Management route
Sculptra
Poly-L-lactic acid particles
No
Clustered particles with surrounding collagen response, or spread product; depth and inflammation
Time and massage for early soft papules; intralesional treatment after diagnosis; Time Freeze Laser LCLR® Sculpting mode for migrated or over-stimulated product
Radiesse
Calcium hydroxylapatite microspheres
No
Bright, radio-opaque material, one of the easier fillers to identify
Nodules managed by what the scan shows; sodium thiosulfate has been reported for CaHA nodules
Ellansé
Polycaprolactone microspheres
No
Firm deposit with collagen response
Time Freeze Laser LCLR® Sculpting mode, built to target the excess, including under the eye after assessment
Juvelook
Poly-D,L-lactic acid in a hyaluronic acid carrier
Only on the hyaluronic acid carrier
Mixed picture: carrier gel beside stimulator response
Carrier can be dissolved; excess PDLLA managed as a collagen stimulator
Hyaluronic acid layered with a stimulator
Both materials together, often from different visits
On the hyaluronic acid component only
A dark hyaluronic acid pocket beside stimulator response
Hyaluronic acid dissolved selectively first, then the stimulator component reassessed
Waiting. In the 5,081-treatment calcium hydroxylapatite review, most nodules resolved (Kadouch 2017).
Intralesional treatment. For persistent nodules and granulomas, published options include medicines injected into the nodule (Lemperle, Plast Reconstr Surg 2009; Vleggaar, J Drugs Dermatol 2014). This follows a diagnosis, not a guess.
Time Freeze Laser LCLR® Sculpting mode. For excess collagen-stimulator material in the face, including under the eye, Dr Sin Yong uses the Sculpting mode of Time Freeze Laser LCLR®, which is built to target the excess. He uses it for nodules large and small, including Ellansé nodules, excess Juvelook, layered hyaluronic acid and migrated Sculptra. He uses it under the eye; whether it suits a particular under-eye is decided at assessment.
Nodules large and small. Dr Sin Yong uses the Sculpting mode of Time Freeze Laser LCLR® for nodules large and small, without an incision; how each person responds varies. More on the mode is in the Sculpting mode of Time Freeze Laser LCLR®.
Where hyaluronic acid has been layered with a collagen stimulator, the HA component can still be dissolved. More on collagen stimulators: filler correction, Ellansé, Sculptra.
Dr Sin Yong’s approach
Ellansé nodules and Sculptra migration. Non-hyaluronic-acid fillers cannot be dissolved with hyaluronidase. In Dr Sin Yong's practice they are mapped with ultrasound to help show what the lump is and how deep it sits, then treated with Time Freeze Laser LCLR®, which is built to target the over-stimulated tissue. Inflammatory or infected nodules are managed medically first. Pages: non-HA filler lumps · filler correction.
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 on Orchard Road, 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, HIRONIC, FOTONA, ALMA, LUTRONIC and ILOODA · HSA-registered devices · ultrasound-guided correction
No. Sculptra is poly-L-lactic acid, which hyaluronidase does not break down. Lumps are assessed with ultrasound and managed according to what is found.
Ellansé is polycaprolactone and is not dissolved by hyaluronidase. Dr Sin Yong uses Time Freeze Laser LCLR® Sculpting mode for Ellansé nodules, including under the eye; whether it suits a particular under-eye is decided at assessment.
In a review of 5,081 calcium hydroxylapatite treatments, most nodules resolved. Persistent ones are assessed and managed.
Juvelook combines poly-D,L-lactic acid (PDLLA), a collagen stimulator, with a hyaluronic acid carrier. Hyaluronidase can dissolve the HA component but not the PDLLA, so excess Juvelook is managed as a collagen stimulator.
Non-hyaluronic-acid fillers cannot be dissolved with hyaluronidase. The area is mapped with ultrasound to help show what the lump is and how deep it sits, then treated with Time Freeze Laser LCLR®, which is built to target the over-stimulated tissue. Inflammatory or infected nodules are managed medically first.
Migrated or over-stimulated Sculptra is assessed with ultrasound and, where appropriate, treated with Time Freeze Laser LCLR®. Massage and time are discussed where the nodule is early and soft.
References
Kadouch JA. Calcium hydroxylapatite: a review on safety and complications. J Cosmet Dermatol. 2017;16(2):152-161. doi:10.1111/jocd.12326. 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
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
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
Convery C, Davies E, Murray G, Walker L. Delayed-onset nodules (DONs) and considering their treatment following use of hyaluronic acid fillers. J Clin Aesthet Dermatol. 2021;14(7):E59-E67. PMID 34840652. source
