Radiesse Calcium Hydroxylapatite Biostimulator

Radiesse calcium hydroxylapatite filler and biostimulator for structural volumising and collagen stimulation in the jawline, chin, nasolabial folds, neck, décolletage, and hands. Unlike hyaluronic acid fillers, Radiesse works via immediate volumising followed by CaHA microsphere-mediated collagen stimulation. Results are associated with lasting twelve to eighteen months. Sessions run twenty to forty minutes.

Radiesse, manufactured by Merz Aesthetics, is a calcium hydroxylapatite (CaHA) filler available at Sona Medical Aesthetics that operates through a dual mechanism: immediate volumising from the gel carrier, followed by longer-term collagen biostimulation from the suspended CaHA microspheres. Unlike hyaluronic acid fillers, which rely on water retention and mechanical support from cross-linked HA gel alone, Radiesse's CaHA microspheres act as a scaffold that triggers fibroblast recruitment and new collagen synthesis in the surrounding tissue over weeks and months following injection. As the carboxymethylcellulose gel carrier is gradually resorbed — typically over the first few months — the CaHA microsphere matrix remains in place, providing ongoing scaffolding and biostimulatory signalling until the microspheres themselves are slowly metabolised by macrophages over twelve to eighteen months. This biostimulatory property makes Radiesse a dual-purpose product: it provides immediate structural correction in volume-deficit areas, and also progressively improves skin firmness and density in the area treated as new collagen forms around the spheres. The clinic uses Radiesse for facial areas requiring structural lift and support — primarily the jawline and chin for definition, the smile lines (nasolabial folds) for deep fold correction, and the midface. Radiesse is also used in the neck and décolletage when injected in a diluted, hyperdiluted form (Radiesse mixed with saline and lidocaine), where the collagen-biostimulatory effect with minimal volumising achieves gradual skin quality improvement in the notoriously thin and lax skin of these areas. The hands are another key indication — hand rejuvenation with Radiesse addresses the age-related volume loss over the dorsal tendons and veins that gives older-appearing hands a skeletonised look. Sessions run twenty to forty minutes. Results are associated with lasting twelve to eighteen months depending on the area.