HArmonyCa lumps, and only offered surgery? Get assessed first

Warning signs after HArmonyCa: when to act at once

Urgent: a change in vision or eye pain after filler: call 995 now. Skin that turns pale, dusky or mottled, or pain that is getting worse, needs urgent assessment by the doctor who injected you, or at A&E, now. See the warning signs of a blocked blood vessel after filler.

Skin that is dying after a blocked blood vessel (necrosis) is an emergency. It needs urgent, more intensive care than a lump does, starting now.

HArmonyCa is injected into the face, where blood vessels run close to where filler sits, and a blocked blood vessel is a risk with any filler injection there. An advisory board of 13 European physicians produced algorithms for the vascular complications of a hybrid hyaluronic acid and calcium hydroxylapatite injectable, both in the treated area and in the retina, at the back of the eye (Philipp-Dormston 2025).

What to look for

• Colour. Skin over or near the treated area that turns white or pale, then dusky, purple or net-like (mottled): urgent assessment by the doctor who injected you, or at A&E, now.
• Pain. Pain that is severe, or getting worse rather than settling: urgent assessment by the doctor who injected you, or at A&E, now.
• Later signs. Blisters, crusts, dark scabs or broken skin over the area mean the skin is already short of blood: urgent assessment by the doctor who injected you, or at A&E, now.
• Eyes. Blurred or lost vision, double vision, or pain in or around the eye: call 995 now.
• Stroke signs. New weakness of the face, an arm or a leg, or slurred speech: call 995 now, and do not travel to a clinic first.

These signs usually appear during or soon after the injection, sometimes later: act whenever they appear, whoever injected the filler. Do not massage the area, put heat on it, or wait for a message reply, a booked review or the colour to settle. If your vision is affected, call 995 and do not drive yourself.

What happens next

Hyaluronidase acts on the hyaluronic acid part of the hybrid, and in an emergency such as a blocked blood vessel it is not delayed for a skin test. There is no enzyme for the calcium hydroxylapatite part, so going now to the doctor who injected you or to A&E matters all the more; care is then supportive, with referral where needed. The advisory board considers the hybrid's complications to be managed much as for fillers made of one material (Philipp-Dormston 2025). A blocked vessel is never treated with the Sculpting mode or any other laser. Blisters, dark scabs or skin that has started to break down mean the skin is already short of blood: urgent assessment by the doctor who injected you, or at A&E, now. Wound care and review then continue until it has healed.

Red, hot, swollen or draining

• A red, hot, painful, swollen or draining lump, or a fever: a doctor the same day; if no doctor can see you today, A&E. It is treated medically first, before any dissolving, any device and any talk of surgery. Dr Sin Yong sees these lumps the same day.
• A lump that is growing quickly: see a doctor the same day; if no doctor can see you today, go to A&E. Do not wait for a planned laser visit.
• Spreading redness with a fever, feeling faint, confused or very unwell, or swelling around the eye with pain: call 995 or go to A&E now.
• Difficulty breathing, a tight throat, swelling of the tongue or throat, or swelling that spreads quickly across the face, after any injection, including hyaluronidase, can be a serious allergic reaction: call 995 now. Itch, hives or swelling that spreads beyond the treated area: contact the clinic that injected you the same day.

Infected hyaluronic acid is dissolved only once the infection is under control; dissolving never replaces treating the infection. More on this is in infection after filler.

HArmonyCa lumps, and only offered surgery? Read this before you agree to it

Patients come to Dr Sin Yong after being told that a HArmonyCa lump has to be cut out, or that nothing can be done because it cannot be dissolved. Part of that is true: hyaluronidase, the enzyme that dissolves hyaluronic acid filler, acts on the hyaluronic acid in HArmonyCa, but the calcium hydroxylapatite is not dissolved by it. Material that cannot be dissolved can still be treated without an incision.

Emergency signs come first and are set out in when to act at once, above. For everything else, before you agree to an operation, know what it means:

• A scar. Every cut through the skin of the face heals with a scar.
• A dent. Cutting out a lump takes tissue with it, and the area can heal hollow or uneven.
• Nerve injury. Nerves that give the face feeling and movement run close to where filler sits. An injured nerve can leave numbness, or weakness in a smile, a lip or a brow.
• Product left behind. Filler spread through tissue is hard to remove completely.
• No way back. Tissue that has been cut out cannot be put back.

In Dr Sin Yong's practice, almost every hard lump is treated without surgery. If yours is one of the few that needs surgery, you are told plainly, and why. Dr Sin Yong maps the lump with ultrasound, dissolves the hyaluronic acid part after a skin test if the lump contains it, and treats what remains with the Sculpting mode of Time Freeze Laser LCLR®, without an incision. Lumps from every kind of filler are covered in hard lumps after filler or skin boosters.

“Dissolving filler is not an undo button.”

Dr Sin YongOn what dissolving can and cannot do

What HArmonyCa is: hyaluronic acid and calcium hydroxylapatite in one syringe

HArmonyCa is a hybrid filler: a cross-linked hyaluronic acid gel carrying microspheres of calcium hydroxylapatite, the material in Radiesse, in one syringe. The hyaluronic acid gives volume and lift on the day. The calcium hydroxylapatite microspheres are meant to act as a scaffold around which the skin builds its own collagen over time.

Clinicians also mix calcium hydroxylapatite and hyaluronic acid themselves. A technique paper on the jawline and chin describes using calcium hydroxylapatite, a stiff hyaluronic acid or a hybrid of the two, depending on the goal (Moradi 2019). An international panel of 23 professionals, voting over three rounds, reached consensus on hybrids made in the clinic by mixing calcium hydroxylapatite with a hyaluronic acid filler, rather than ready-made products such as HArmonyCa: they are used for volume, contour and skin quality, and the recommendations cover dilution ratios, injection under the skin and avoiding sites of high muscle activity; the panel called for more research on long-term safety (Kadouch 2026).

The two materials behave differently when something goes wrong. The hyaluronic acid can be dissolved; the calcium hydroxylapatite is not dissolved by hyaluronidase. A lump can be one, the other or both, and filler from other visits can sit in the same area. Problems after calcium hydroxylapatite on its own are covered in Radiesse lumps and Radiesse gone wrong, and how it differs from other collagen stimulators in collagen biostimulators in Singapore. Juvelook carries a different collagen stimulator, poly-D,L-lactic acid, in hyaluronic acid; lumps after it are covered in Juvelook lumps.

Can HArmonyCa be dissolved? Only the hyaluronic acid part

Hyaluronidase is an enzyme that acts on hyaluronic acid only. In HArmonyCa it acts on the hyaluronic acid gel; the calcium hydroxylapatite microspheres are not dissolved by it. One published series points the same way: in 55 complications after collagen stimulators in general (poly-L-lactic acid, calcium hydroxylapatite and polycaprolactone), collected by ultrasound specialists in Brazil, hyaluronidase helped only where calcium hydroxylapatite had been mixed with hyaluronic acid, and only 5 cases resolved completely despite several treatments (Ianhez 2024). That study did not use the Sculpting mode, and its figures do not apply to it.

So dissolving acts on part of a lump. Where a lump is mostly hyaluronic acid, the enzyme acts on most of it; where it is mostly calcium hydroxylapatite, the enzyme does not dissolve that part. Material that cannot be dissolved can still be treated without an incision, so the plan has two stages, in an order decided by the scan.

Stage one: the hyaluronic acid, if the lump contains it

A red, hot, painful, swollen or draining lump comes before either stage: it needs a doctor the same day (A&E if no doctor can see you today) and is treated medically first. Otherwise, your allergy history is checked, including any reaction to bee or wasp stings and any earlier hyaluronidase. Before planned dissolving, Dr Sin Yong always does a skin test: a small amount of hyaluronidase is injected just under the skin to check for a reaction. A small first dose goes into the mapped hyaluronic acid, with a review at about 48 hours, because dissolving more than the excess can leave a hollow. In an emergency such as a blocked blood vessel, dissolving is not delayed for a skin test. More on the skin test is in hyaluronidase allergy and the skin test, and on the enzyme in how hyaluronidase is used.

Stage two: the calcium hydroxylapatite that remains

Dr Sin Yong treats what remains with the Sculpting mode of Time Freeze Laser LCLR®, his own protocol on a long-pulsed 755 nm and 1064 nm laser platform, directed at the mapped lump, without an incision. Like any laser, it can cause blistering or a change in skin colour, so settings are chosen for your skin. Near the eyes, settings are kept conservative and the eyes are protected. A blocked vessel is never treated with the Sculpting mode or any other laser. More on the laser is in the Sculpting mode of Time Freeze Laser LCLR®.

Dr Sin Yong does not inject more filler over a lump. Any refilling waits at least two weeks after dissolving and is considered only once the lumps have been addressed.

HArmonyCa side effects: what is expected, and what is not

Some effects follow any filler injection and are not a sign that HArmonyCa has gone wrong:

• Swelling, tenderness and bruising where the needle went in, easing steadily as the area settles.
• Firmness in the treated area while the swelling settles.
• Temporary unevenness until the swelling has gone.

For calcium hydroxylapatite on its own, a safety review describes injection-related events as local, short-term and mild (Pavicic 2013), and a global consensus on diluted calcium hydroxylapatite for skin tightening lists bruising, mild pain, swelling and firmness, with more problems when less-diluted product is placed too superficially in thinner, darker skin (Goldie 2018). Those two papers concern calcium hydroxylapatite alone, not the hybrid.

What is not expected

Guidance on the hybrid discusses skin discolouration and swelling (oedema), and sets out algorithms for late reactions, both non-inflammatory and inflammatory (Philipp-Dormston 2025).

• A lump you can see, or one that keeps growing.
• A firm lump that appears months or years after the treatment.
• Swelling that does not settle, or keeps coming back.
• A change in skin colour over the treated area that stays once any bruising has gone.
• A lump that turns red, hot, tender or swollen, or drains: see a doctor the same day; if no doctor can see you today, go to A&E.
• Skin that turns pale, dusky or mottled, or pain that is getting worse: urgent assessment by the doctor who injected you, or at A&E, now.

The first four start with a scan. The last two are covered in when to act at once, above.

HArmonyCa gone wrong: lumps, nodules and swelling, and what each usually is

Most problems after HArmonyCa fall into a few patterns, and many people have more than one. What the lump is made of, not how hard it feels, decides what is done.

Swipe sideways to see the whole table.

Small early bumps often soften as the swelling settles. Later nodules and granulomas can persist. A lump that does not look like filler on the scan is not treated as filler; further tests are arranged.

How common are HArmonyCa lumps? What is published, and how little is about the hybrid

No injectable is free of risk, and the published evidence on HArmonyCa itself is thin. The published work on hybrid fillers cited here is expert opinion: an advisory board's guidance on preventing and managing complications with a hybrid injectable (Philipp-Dormston 2025), and a consensus panel on calcium hydroxylapatite mixed in the clinic with a hyaluronic acid filler, which calls for more research on long-term safety (Kadouch 2026). Neither is a study that counts how often problems happen, so this page gives no complication rate for HArmonyCa. The figures that exist come from related products:

• Calcium hydroxylapatite alone. In a review of 21 studies covering 5,081 treatments in 2,779 patients, about 3% of treatments had an adverse event, almost all of them nodules; most nodules could not be seen and settled without treatment (Kadouch 2017). A safety review found only a handful of reported foreign-body reactions in about 10 years of use, and described lumps after injection into the lips, where it is not approved, as clumps of particles rather than a granuloma (Pavicic 2013).
• Granulomas after collagen stimulators. In a systematic review of 117 patients with granulomas after collagen stimulators (PMMA, poly-L-lactic acid, calcium hydroxylapatite and polycaprolactone), 27% of reported cases followed calcium hydroxylapatite. Across all four products, granulomas appeared from 1 week to 15 years after injection, on average about 20 months (Wang 2025).
• Granulomas after fillers of any kind. In an international ultrasound study of 240 granulomas, 50.4% followed hyaluronic acid and 6.3% calcium hydroxylapatite, the two materials in HArmonyCa (Wortsman 2025); neither figure is about HArmonyCa itself.

These figures come from different kinds of study, with different products and follow-up. The granuloma percentages describe the cases each study collected, not the risk with any one treatment. They show what can happen; they do not predict what will happen to you.

Ultrasound first: what the scan shows after HArmonyCa

Ultrasound shows where the filler sits, how deep it is and how far it has spread, and what it is likely made of. After HArmonyCa that matters more than usual, because a lump can be the hyaluronic acid, the calcium hydroxylapatite, both, filler from another visit, a granuloma, fluid, or something that is not filler at all.

Different materials look different on the scan. A review of filler ultrasound, covering calcium hydroxylapatite among other materials, describes patterns that differ by material, with hyaluronic acid dark on the scan, and calls high-frequency ultrasound with colour Doppler the first-line tool for identifying the type of filler, where it is and its complications (Khorasanizadeh 2026). In a two-centre study of 60 people with previous fillers, calcium hydroxylapatite and PMMA both showed what the authors call a coarse-grain ‘snowfall’ pattern, and 12 people showed a mixed pattern, mainly from different procedures at different times (Urdiales-Gálvez 2021).

The scan also guides the plan. In a study of 231 patients with firm lumps after filler, ultrasound agreed with the tissue diagnosis in 85.7% of the 70 who had a biopsy, and the type of lump on the scan was linked to which approach did better (Wang 2026). That study did not use the Sculpting mode, and its figures do not apply to it. An international consensus of 15 experts from seven specialties calls ultrasound mandatory for managing filler complications (Velthuis 2025).

The scan shows what a lump is likely made of; it does not prove it. Where a lump does not look like filler, further tests are arranged. Dr Sin Yong performs the scan himself, and the plan follows what it shows. More on scanning is in ultrasound-guided filler correction.

Do I need surgery to remove HArmonyCa? What an operation involves

Usually not. Get assessed first. Where the lump contains hyaluronic acid, that part is dissolved after a skin test, and Dr Sin Yong treats the calcium hydroxylapatite that remains with the Sculpting mode of Time Freeze Laser LCLR®, without an incision.

Calcium hydroxylapatite is not a gel sitting in a pocket: the microspheres are meant to become embedded in collagen the body makes around them. Surgical removal therefore means cutting out the lump, through the skin or from inside the mouth, together with your own tissue around it, which is why a dent is a real risk. Along the jawline, an operation comes close to the nerve that moves the lower lip. A review of granulomas after dermal fillers in general notes that cutting them out is often incomplete, because granulomas have ill-defined borders, and that it may leave scars and deformities (Lee 2015).

Where surgery has a place

Surgery has a place, and the published work says so. In the systematic review of granulomas after collagen stimulators, calcium hydroxylapatite among them, surgical removal often resolved symptoms (Wang 2025). In the ultrasound study of 231 firm lumps after filler of any kind, granulomas with no filler left, and hyaluronic acid with a granuloma, did better with invasive treatment, granulomas around filler other than hyaluronic acid did better with non-invasive treatment, and invasive treatment gave greater improvement overall (Wang 2026). That study did not use the Sculpting mode, and its figures do not apply to it. An abscess may need draining, and a lump that does not look like filler on the scan may need a tissue sample.

Published work also describes a stepped approach for calcium hydroxylapatite on its own: for lumps that are not inflamed, an expert panel moves from leaving them alone, through massage or dispersing the material, then medical treatment injected into the lump, to lasers, and finally to a medical treatment that breaks down calcium, or surgical removal (McCarthy 2024). These are published approaches, not the Sculpting mode, and they are not evidence for it.

The point is the order: scan first, decide after. What the lump is on the scan, not simply that it is hard, decides what is dissolved, what is treated without an incision and which few need an operation. A scan does not delay that decision: an operation can still be done later if it is ever needed, and it cannot be undone.

HArmonyCa removal options compared

Swipe sideways to see the whole table.

More on operations to take filler out is in filler removal surgery, and on granulomas in filler granuloma.

Tried other treatments and almost given up?

Many patients who come to see Dr Sin Yong about HArmonyCa lumps tell him they have tried almost everything else and had given up hope. Having tried other treatments does not mean nothing more can be done: what is done next depends on what the scan shows.

That history is useful. Knowing what was injected, when, and what has already been tried often explains why a problem has stayed: hyaluronidase acts only on hyaluronic acid and only where it reaches, some fillers are not hyaluronic acid at all, and swelling or fluid can look like filler. Ultrasound shows which of these applies, and the plan starts from there. For material that cannot be dissolved, 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.

If you have been told nothing more can be done, it is still worth having the area scanned: ultrasound shows what is there, and the plan is made from that. Bring any records of past treatments, product names and dates if you have them. More on this is in when filler dissolving has not worked.

How Dr Sin Yong treats HArmonyCa lumps without surgery

1. History. What was injected, where and when, if known, including whether it was HArmonyCa or hyaluronic acid mixed with calcium hydroxylapatite, and any filler placed before or since; whether the lump has flared; what has been tried and what you were offered. Having no records is fine.
2. Ultrasound mapping. Dr Sin Yong scans each lump himself: where the product sits, how deep it is, how far it has spread, what it is likely made of and the vessels nearby.
3. Inflammation or infection first. A red, hot, painful, swollen or draining lump needs a doctor the same day (A&E if no doctor can see you today) and is treated medically before anything else.
4. The hyaluronic acid part. Where the lump contains hyaluronic acid, it is dissolved with hyaluronidase after a skin test: a small first dose, with a review at about 48 hours.
5. What remains. He treats the calcium hydroxylapatite with the Sculpting mode of Time Freeze Laser LCLR®, directed at the mapped lump, without an incision.
6. Further tests where needed. A lump that does not look like filler on the scan is not treated as filler; further tests are arranged.
7. Review. Each lump is reassessed, and any further visit is planned from what is seen.

He does not inject more HArmonyCa or other filler to hide a lump. Where the face has lost shape, that is considered only after the lumps have been addressed. Dr Sin Yong developed the Time Freeze Laser LCLR® protocol himself and performs every scan and treatment himself on Orchard Road. He has been invited to share his clinical expertise in Seoul, Dubai, Bangkok and São Paulo, including as a Global Key Opinion Leader.