What Is Radiesse and How Does It Work?
By Dr. Azra Vaziri — DHA & DOH Licensed Aesthetic Physician | Dubai & Abu Dhabi
Radiesse is a calcium hydroxylapatite (CaHA) biostimulator — one of the few injectable treatments that provides both immediate volumisation and long-term collagen stimulation in a single product. Unlike hyaluronic acid fillers, which add volume through hydration, or Sculptra, which stimulates collagen without immediate effect, Radiesse does both simultaneously. This dual mechanism makes it clinically distinct and suited to specific treatment goals and patient profiles.
How Radiesse Works — The Dual Mechanism
Radiesse consists of calcium hydroxylapatite microspheres suspended in a gel carrier. When injected, the gel carrier provides immediate volume and lift. Over the following weeks, the CaHA microspheres act as a scaffold, stimulating fibroblasts to produce new collagen and elastin — the long-term biostimulation effect.
Over 12–18 months, the gel carrier is gradually absorbed and the CaHA microspheres break down — but the collagen your body produced remains. This is why many patients report that Radiesse results look better at 3–6 months than immediately after injection, as the initial gel softens and the collagen takes over.
Where Radiesse Is Used
Face
Cheeks, temples, jawline, chin, nasolabial folds. Radiesse provides structural support and definition in areas where firm, precise volumisation is needed. Its thickness makes it particularly suited to deeper facial zones.
Hands
Radiesse is the gold standard treatment for hand rejuvenation — restoring volume lost over the dorsum of the hands, reducing the appearance of prominent tendons and veins. Results are immediate and last 12–15 months. See: Hand rejuvenation Dubai.
Neck and body (hyperdilute)
When diluted with saline and lidocaine (hyperdilute Radiesse), it can be used across larger areas — the neck, décolletage, and body — to improve skin laxity and quality rather than add volume. This formulation is distinct from standard Radiesse in both technique and outcome.
Radiesse vs HA Fillers vs Sculptra
| Radiesse | Sculptra | HA Filler | |
|---|---|---|---|
| Ingredient | Calcium hydroxylapatite | Poly-L-lactic acid | Hyaluronic acid |
| Immediate results | Yes — volume visible same day | No | Yes |
| Collagen stimulation | Yes | Yes (primary mechanism) | No |
| Duration | 12–18 months | 2+ years | 12–18 months |
| Reversible | No | No | Yes |
| Best for | Structural zones, hands, immediate + collagen | Diffuse volume loss, global face | Targeted, reversible augmentation |
Full comparison: Radiesse vs Sculptra | Biostimulators vs HA Fillers
What Is Radiesse — FAQs
What is Radiesse made of?
Radiesse is made of calcium hydroxylapatite (CaHA) microspheres suspended in a gel carrier of sterile water, glycerin, and carboxymethylcellulose. Calcium hydroxylapatite is a mineral naturally found in human bone — biocompatible and biodegradable. Radiesse+ also contains lidocaine for improved comfort during injection.
Is Radiesse a filler or a biostimulator?
Radiesse is both. It is classified as a biostimulator because it stimulates collagen production — but unlike Sculptra (which stimulates collagen only), Radiesse also provides immediate volumisation through its gel carrier. This dual mechanism means it functions as both a filler and a biostimulator simultaneously.
Does Radiesse hurt?
Radiesse is available in a standard formulation and Radiesse+ (with lidocaine). Radiesse+ significantly reduces discomfort during injection. Topical anaesthetic is also applied beforehand. Most patients describe mild pressure and temporary stinging at the injection site. Bruising and swelling resolve within 5–7 days for most patients.
Can Radiesse be dissolved if I don’t like the results?
No. Unlike HA fillers (which can be dissolved with hyaluronidase), Radiesse cannot be enzymatically dissolved. This makes patient selection and precise technique more critical. Dr. Azra assesses all patients carefully before recommending Radiesse to ensure it is appropriate for your anatomy and goals.
What is hyperdilute Radiesse?
Hyperdilute Radiesse is Radiesse diluted 1:1 or more with saline and lidocaine, creating a thinner formulation that spreads across larger surface areas. Used primarily for neck laxity, décolletage rejuvenation, and body skin quality improvement rather than facial volumisation. The mechanism is predominantly biostimulation rather than volume replacement.
How long does Radiesse last?
Radiesse lasts 12–18 months in most patients. The gel carrier is absorbed over the first several months while the CaHA microspheres continue stimulating collagen. Results often look best at 3–6 months as the initial gel softens and collagen takes over. Annual maintenance typically sustains results.
What areas can Radiesse treat on the face?
Radiesse is used for cheeks, temples, jawline, chin, and nasolabial folds. Because of its thicker consistency, it is particularly suited to structural zones where firm support and definition are needed. It is not used for superficial areas such as the lips or under-eyes, where HA fillers are more appropriate. For full treatment detail, see Radiesse Dubai.
Full treatment guide
Cost per syringe and by area
Which biostimulator is right for you
Radiesse for hand volume restoration
Book A Consultation With Dr Azra
Patients seeking personalized aesthetic assessment in Dubai or Abu Dhabi can contact Dr Azra for consultation regarding PRP, exosome therapy, and regenerative skin treatment planning.
Dr Azra Vaziri is a DHA and DOH licensed aesthetic physician practicing in Dubai and Abu Dhabi, with over 20 years of experience in aesthetic medicine, injectables, thread lifting, and non-surgical facial rejuvenation.
