Medically reviewed by Derek Truong, NP, Medical Director at Infinite Medical Spa.
Sculptra vs Radiesse is mostly a question of timing and target. Both are collagen biostimulators approved for use in Canada, but they get there differently. Sculptra (poly-L-lactic acid) rebuilds volume gradually over a series of sessions, with results that can last two years or more. Radiesse (calcium hydroxylapatite) adds visible structure on the day of treatment and keeps stimulating collagen for roughly a year or more afterward. In London, Ontario, Sculptra and Radiesse treatments at Infinite Medical Spa are chosen by area, by how much volume has been lost, and by how soon the result needs to show.
Demand for this category is climbing. In the American Academy of Facial Plastic and Reconstructive Surgery’s 2024 member survey, surgeons reported a 50 percent rise in fat-grafting procedures, driven largely by patients restoring facial volume after rapid weight loss, and one in four expected that demand to spill over into nonsurgical options such as injectable fillers (US data). This guide covers how the two products differ, which one suits jowls, the jawline and the neck, how long each lasts, and the downsides worth knowing before booking.
Sculptra is made of poly-L-lactic acid, or PLLA. It comes as a powder that the injector reconstitutes with sterile water. Once placed under the skin it absorbs within a few days and prompts cells to produce new collagen. There is no immediate filling effect. Skin usually starts looking fuller around the one-month mark, and the result keeps building as the series continues (Cleveland Clinic, 2023).
Radiesse is made of calcium hydroxylapatite, or CaHA, a mineral compound similar to what is found in bone. The CaHA microspheres sit in a gel carrier, so the treated area looks fuller right away. As the gel is absorbed over the following months, the microspheres act as a scaffold that encourages collagen to form around them (Cleveland Clinic, 2022). You see a result on day one. Then it keeps improving.
Both products are licensed for sale in Canada. The FDA’s 2023 approval summary for Sculptra lists Canada among the countries where it is approved, and Radiesse has held Health Canada approval for facial use since BioForm Medical’s original Canadian launch, with a further approval for moderate décolleté wrinkles added in June 2025.
The one-line version: Sculptra is gradual and diffuse. Radiesse is immediate and structural.
Neither is better across the board. The right answer depends on what is being treated and how quickly the change needs to show.
Many treatment plans in London, Ontario use both, in different areas or in stages. Sculptra might rebuild the cheeks while Radiesse sharpens the jawline.
Sculptra, in most published data. In the clinical trial behind its 2023 FDA approval for cheek wrinkles, 96 percent of patients showed improvement at three months and 94 percent still showed improvement at two years (Healio, 2023). Cleveland Clinic notes that results can last more than two years, with maintenance treatments every few years.
Cleveland Clinic puts typical Radiesse results at around a year, and Infinite Medical Spa plans for 12 to 18 months depending on the area and the person. Fewer sessions are usually needed up front, which narrows the gap in annual cost even though a Sculptra series lasts longer.
One nuance. Sculptra’s longevity is measured after a full series of sessions, not after a single vial. One vial rarely produces the two-year result people read about.
It depends on what is actually causing the jowl. Jowls usually come from two things happening at once: volume loss above the jawline that lets the cheek descend, and skin laxity along the jaw and neck.
For a soft, undefined jawline, Radiesse is the more direct tool. Its jawline approval was based on patients with moderate to severe loss of contour, and the gel carrier means the definition is visible immediately (Merz Aesthetics, 2022). Injection in this area can temporarily affect jaw function, which is one reason it belongs with an experienced injector.
For the neck and chest, Radiesse is used in a hyperdiluted form. A global expert panel published consensus guidelines in Dermatologic Surgery in 2018 describing diluted and hyperdiluted CaHA for laxity and skin quality in the lower face, neck and décolletage. That use is off-label for the neck, while Health Canada’s 2025 approval now covers moderate chest wrinkles specifically.
Sculptra helps jowls indirectly. By rebuilding volume in the cheeks and lower face, it can lift the tissue that has slid toward the jaw. It won’t tighten loose skin on its own. When laxity is the main driver, an energy-based option such as Ultherapy for the neck and jowls may be a better fit, alone or combined with a biostimulator.
This is one of the most common reasons people now ask about biostimulators. The American Society of Plastic Surgeons’ 2024 procedural statistics report found that 41 percent of patients using weight-loss medications under the care of its member surgeons were considering a nonsurgical procedure, and the same report noted that demand for non-hyaluronic acid fillers remained consistently strong (US data).
Rapid weight loss tends to deflate the temples and cheeks first, then the area under the eyes, and it can leave the skin a little loose. Sculptra is often the first choice here because the loss is diffuse and the goal is to restore structure quietly over several months. Radiesse is added when the jawline or chin needs definition that the deflation exposed. Weight that is still changing is a reason to wait, since a biostimulator placed into a face that is still shrinking is hard to adjust later.
Most people describe both as pressure and brief stinging rather than real pain. Radiesse(+) comes premixed with lidocaine, and Sculptra is usually mixed with lidocaine before injection, often with a topical numbing cream applied first (Galderma). Radiesse is a thicker product placed deeper, so the injection itself can feel firmer. Sculptra involves more needle passes spread across a larger area.
Downtime is short for both. Cleveland Clinic lists swelling, bruising and tenderness at the injection sites as the common effects, usually settling within a few days. Sculptra adds one homework task: the manufacturer’s 5-5-5 rule, which is five minutes of massage, five times a day, for five days, to spread the product evenly and reduce the chance of small lumps (Galderma).
Both products attract a lot of fear-driven searches, so here is the plain list.
The common thread is placement. These products are less forgiving than hyaluronic acid filler, and the injector’s training matters more than the name on the box.
Start with two questions. Where is the volume loss, and is the main problem deflation or definition? Then the question most people skip: when does the result need to be visible?
Diffuse hollowing with a flexible timeline points toward Sculptra. A soft jawline, weak chin or aging hands, especially with an event in the next six to eight weeks, points toward Radiesse. Loose skin without much volume loss may call for energy-based tightening instead of either.
At a biostimulator consultation in London, Ontario, the nurse injectors at Infinite Medical Spa use a VISIA skin analysis to map where volume has been lost before recommending a product or a vial count, and every plan is staged under the oversight of Derek Truong, NP, Medical Director. Some people leave with a Sculptra plan, some with Radiesse, and some with both in sequence. Anyone unsure which category they fall into can book a consultation and find out before committing to either.
Cleveland Clinic classifies it as a type of dermal filler, but it behaves differently from the hyaluronic acid products most people picture. Hyaluronic acid filler adds volume on the spot and typically lasts six months to a year (Cleveland Clinic, 2022). Sculptra adds no volume on the spot and instead stimulates collagen. In 2020, about 134,000 of the roughly 3.4 million filler procedures in the US used Sculptra (Cleveland Clinic). For an immediate, reversible change, hyaluronic acid dermal fillers remain the standard option.
Yes, and they often are, in different areas or in stages. A common pairing is Sculptra for cheek and temple volume with Radiesse along the jawline. Both can also sit alongside Botox or hyaluronic acid filler in a broader plan, with the timing set by the injector.
Galderma describes a typical Sculptra plan as a short series of sessions spaced weeks apart, and the trial behind its 2023 approval allowed up to four. Radiesse areas are usually planned as one or two sessions. Session counts for either product are set after the consultation; the clinic’s Sculptra and Radiesse page outlines how treatments are staged.
Not with hyaluronidase, which only breaks down hyaluronic acid. Minor unevenness from either product is usually managed with massage and time, and any persistent nodule is assessed by the injector. This is the main reason both products are considered injector-dependent.
Sculptra is priced per vial and Radiesse per syringe, and the total depends far more on how many vials or syringes an area needs than on a flat session fee. Published Canadian Sculptra pricing and realistic plan totals are broken down in the clinic’s 2026 Sculptra cost guide for London, Ontario. Exact pricing is confirmed at the consultation.
Radiesse. CaHA is approved for volume loss in the face and hands (Dermatologic Surgery, 2018), and the immediate gel volume works well on the thin skin of the hand. Sculptra is not typically used there.
This article was medically reviewed by Derek Truong, NP, Medical Director at Infinite Medical Spa. It is for general education only and is not a substitute for a personal consultation. Individual results vary.
Derek Truong, NP — Medical Director, Infinite Medical Spa
Derek Truong is a Nurse Practitioner and the Medical Director at Infinite Medical Spa in London, Ontario. He sets our clinical standards and medically reviews our educational content for accuracy and safety. Learn more about our team.
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