Sculptra and Radiesse are collagen biostimulators — a fundamentally different category from hyaluronic acid fillers. Rather than adding volume directly, they stimulate your own collagen to grow and rebuild. The result is gradual, natural, and significantly longer-lasting. Dr. Susan Tan is double board-certified and highly experienced in biostimulator technique — producing stunning, natural-looking facial contouring results with no surgery and no downtime.
Hyaluronic acid fillers add volume directly and temporarily. Collagen biostimulators work differently — they stimulate your own skin to produce new collagen in the areas where they are placed. The result is not an immediate volumizing effect, but a gradual rebuilding of the structural foundation beneath the skin that produces natural-looking improvement over weeks and months.
For patients who have tried filler and found the results unsatisfying — or who want a longer-lasting solution that does not require frequent retreatment — biostimulators are frequently the better recommendation. Dr. Tan will tell you honestly whether biostimulators or fillers are the right approach for your specific anatomy and goals — and she will not recommend a treatment simply because it is more profitable or more popular.
Sculptra is done in 1–3 sessions depending on your existing collagen and your goals, each treatment spaced 8 weeks apart. Think of it as a growth stimulant for your existing youthful fullness. Radiesse provides immediate volume alongside biostimulatory effect — and is particularly effective in the temples, neck, and hands.
Sculptra is made of biocompatible, biodegradable synthetic poly-L-lactic acid. When injected, it activates the skin's natural regenerative process — stimulating fibroblasts to produce new collagen wherever it is placed. Think of it as a growth stimulant for your existing youthful fullness rather than a volumizer. Results develop gradually over 6–8 weeks after each session and continue to improve. Most patients are treated in 1–3 sessions, 8 weeks apart. Volume can last 2 years or more — and some patients experience beneficial effects for as long as 5 years. $850 per session · Package of 4: $2,550.
Radiesse is composed of calcium hydroxylapatite microspheres suspended in a gel carrier. It provides immediate volume at the time of injection — unlike Sculptra, which produces no immediate visible effect — while simultaneously acting as a long-term collagen and elastin booster. The gel carrier provides volume initially; as it is absorbed over months, the CaHA microspheres stimulate new collagen growth that maintains the improvement. Commonly used in the temples, neck, and hands. $1,250 per vial · Package of 4: $3,750.
Biostimulators placed in the midface and along the jawline rebuild the structural collagen that supports the lower face — creating a subtle but meaningful improvement in jawline definition.
Age-related volume loss in the cheeks is one of the most visible changes in facial aging. Biostimulators rebuild the collagen framework that supports cheek volume — naturally and gradually.
Biostimulators can address hollowing beneath the eyes — improving the tear trough area with a more gradual, building approach than hyaluronic acid fillers.
Temple hollowing is an early and often overlooked sign of facial aging. Radiesse in particular is effective for temple restoration — with immediate and long-term biostimulatory effects.
Radiesse, when diluted and injected into the skin of the neck, delivers biostimulatory effects that improve skin quality, reduce crepiness, and tighten texture — a non-surgical approach to neck rejuvenation.
For patients with significant facial fat loss — from aging, weight loss, or medical conditions — biostimulators can rebuild volume more durably than repeated hyaluronic acid filler treatments.
Preserved from our original FAQ schema — common questions about collagen biostimulators with Dr. Tan.
Schedule a consultation with Dr. Tan — she will evaluate your facial anatomy, explain both options, and recommend the approach that best serves your specific goals and timeline.