Radiesse in Charleston and Mt. Pleasant, SC

Reviewed by Ashley Harwyn, PA-C, ABAAHP  |  A4M Board Certified  |  Updated October 4, 2026

Radiesse is a long-lasting calcium hydroxylapatite filler with a specific FDA label. Here is where it is approved, what the trials measured, and what to weigh before you book.

That list matters, because Radiesse is often marketed for more areas than its label covers. Cheeks, chin and neck are not on its US label, and topical use during microneedling is not an approved use at all.[1][2] Below: what it is, what the FDA trials measured, how long results lasted, and the risks that come with a filler that has no proven antidote. To compare it with hyaluronic acid options, see our dermal fillers page.

• Radiesse is synthetic calcium hydroxylapatite in a gel carrier. It is a long-lasting filler, not a permanent one, and it is not a hyaluronic acid filler.[2]
• FDA-approved uses: facial wrinkles and folds such as nasolabial folds, volume loss on the back of the hands, jawline contour (Radiesse (+), adults over 21), HIV-related facial fat loss, and upper-chest wrinkles with a 1:2 saline dilution.[2][3][4]
• In the three most recent FDA trials, 71% to 76% of treated patients improved by at least one grade, compared with 3% to 9% of untreated patients.[2][3][4]
• Results faded over time in those trials. About two in three jawline responders still met the response bar at 48 weeks, and 68.2% of hand patients did at 12 months.[3][4]
• Lab and small human studies suggest CaHA prompts new collagen, but a 2023 systematic review called that evidence limited.[5]
• Unlike hyaluronic acid fillers, CaHA has no proven dissolving agent if it blocks an artery, so injector skill and anatomy knowledge matter even more.[6]

What Radiesse is made of, and why it behaves differently

Radiesse is a soft, opaque implant. Its main ingredient is synthetic calcium hydroxylapatite, in particles 25 to 45 microns across. Those particles sit in a gel of glycerin, sodium carboxymethylcellulose and sterile water.[2] Radiesse (+) is a version that contains 0.3% lidocaine, a numbing medicine.[3] Like any filler, it takes up space where it is placed, so the change in volume starts at the visit.

The longer story is collagen. A 2023 systematic review pooled 12 studies (six in people, three in animals, three in lab cells) and found that CaHA was linked to more collagen, more elastic fibers and new small blood vessels in most of them.[5] The authors were careful, though. They wrote that the evidence is limited, that most studies had methodological problems, and that the findings should be read with caution. The review was also funded by Merz, the company that makes Radiesse.[5] So “stimulates collagen” is a reasonable description of what the lab work suggests, not a promise that your skin will keep improving for months.

There is one more practical difference. Calcium hydroxylapatite shows up on X-rays, and when the FDA reviewed the hand indication, its advisory panel raised questions about how the product might look on hand imaging.[4] If you have Radiesse in your hands or chest, it is worth telling whoever reads your X-rays or mammograms.

Approved, off-label, or not an injection at all

Fillers are approved for specific areas, not for “the face” in general, and the FDA notes it may not have reviewed every filler for every location.[1] Here is Radiesse's US status, area by area.

Two rows deserve a closer look. We do use Radiesse in the cheeks and chin when it fits the goal, but those uses are off-label. That means the FDA has not reviewed Radiesse data for those sites, and you deserve to know that before you choose. For cheek or chin volume, some hyaluronic acid fillers carry FDA approval for those exact areas[1], and hyaluronic acid can be dissolved with an enzyme if needed.[6]

The neck is a firmer no. The FDA's patient page lists the neck among injection sites where it recommends against fillers.[1] If neck skin quality is your goal, ask about options built for that job, such as microneedling or skin tightening, before considering an off-label injection.

Finally, the topical add-on. Some clinics spread diluted Radiesse over the skin during microneedling. Every approved Radiesse use is an injection, so this is not an FDA-approved use.[2] The most recent study we found on the idea tested pig skin and lab-grown skin cells, and its authors noted it had no live-animal or clinical validation.[7] We would rather offer microneedling on its own evidence.

What the trials measured, and how long results lasted

You will often see “12 to 18 months” quoted for Radiesse. That figure is too tidy. The FDA trials measured something narrower: whether a blinded evaluator saw at least a one-grade improvement on a photo scale, and for how long. Here is what they found.

For the jawline, 180 adults took part in a randomized trial with an untreated comparison group. At 12 weeks, 75.6% of treated patients met the response bar, compared with 8.8% of untreated patients. Among the treated patients who responded, 67.3% still met it at 48 weeks.[3] For the hands, 75.3% of treated patients improved at 3 months versus 3.4% of controls, and 68.2% still met the bar at 12 months.[4]

The upper-chest trial worked differently. Women aged 30 to 65 received three sessions of diluted Radiesse, six weeks apart. At 24 weeks, 71.2% were responders compared with 6.3% of the untreated group, and the responder rate stayed above 60% at 60 weeks.[2] That is a series of treatments, not one visit, so plan your time accordingly.

Put plainly: most treated patients saw a measurable change, a real share had lost it by one year, and touch-ups or repeat treatment were part of every study. Your own result may land above or below these averages. Nobody can promise that results will keep improving on their own, and we will not.

Risks, and why there is no quick undo

Most side effects are the usual ones for any filler: bruising, redness, swelling, pain, tenderness, itching and rash.[1] In the jawline trial, most of these reactions were mild to moderate and settled within two weeks. The most common side effects judged to be from the device were a firm lump at the injection site, bruising and pain, and 19.4% of treated patients had at least one.[3] The hand trial was rougher: every participant had at least one side effect, 48% had trouble using their hands for a while, and lumps lasted anywhere from 17 to 312 days.[4]

The serious risk is rare but real. If any filler is injected into a blood vessel, it can block blood flow and cause skin death, vision problems including blindness, or stroke.[1] Problems reported after approval, in the US and abroad, include blocked blood vessels, nodules, granulomas and blindness.[2] With a hyaluronic acid filler, an injector can use an enzyme called hyaluronidase to dissolve the product. A 2021 lab and cadaver study found that intra-arterial CaHA still lacks a suitable antidote.[6] That is the main reason Radiesse should be placed by someone who knows facial blood vessels well, and why we are cautious in high-risk zones.

Get care right away, day or night, if you notice unusual pain, vision changes, skin that turns white, gray or blue near the injection site, or any sign of stroke.[1] Radiesse is also not for people with bleeding disorders, a history of severe allergic reactions or anaphylaxis, or an allergy to any of its ingredients.[2] And never buy filler online. The FDA warns those products may be counterfeit or not approved in the US.[1]

Weighing Radiesse against other fillers? Bring the areas you care about and any past filler history. Call 843-981-0870 and we will go through which areas are on-label for you, what the trial data say about how long it lasts, and whether a dissolvable filler would suit you better.

Is Radiesse the right fit, and what a visit looks like

Radiesse tends to suit adults who want structure more than softness: a sharper jawline, fuller-looking backs of the hands, or deeper nose-to-mouth folds. Lips are not on its label, the FDA recommends against filler around the eyes[1], and it is a poor match for anyone who wants a quick way to reverse the result, because a hyaluronic acid filler can be dissolved and CaHA has no proven antidote.[6] If your main concern is frown lines or crow's feet, ask about a neurotoxin, which is a different kind of treatment.

Your visit starts with what bothers you and a close look at the area. We review your medications, bleeding history and allergies, talk through which of your areas are on-label and which are not, and agree on a plan before any product is opened. Radiesse can be part of a plan that also includes skin treatments such as microneedling or skin rejuvenation, done as separate steps.

Ashley Harwyn, PA-C, is board certified in anti-aging and functional medicine through A4M and holds ABAAHP certification. She sees patients at our Mount Pleasant office on Bramson Court and at The Longevity Club on Rutledge Avenue in downtown Charleston, and she will tell you honestly if a different filler, or no filler, would serve you better.