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Biostimulators · Pleasanton & Sunnyvale
Radiesse in Pleasanton
In short
Radiesse is calcium hydroxylapatite — tiny mineral microspheres suspended in a gel. Two things happen. The gel gives structure the day it goes in. The microspheres prompt your own collagen over the months that follow.
The gel resorbs within a few months; the collagen is what you keep, and it usually holds for a year or more. It is not hyaluronic acid, so it cannot be dissolved — which is why it is placed conservatively and built up rather than corrected after the fact.
Used full strength it shapes. Diluted and spread thinly, it does something different: skin quality across the neck, décolleté and hands.
Two things at once
Most injectables do one job. A hyaluronic acid filler adds volume and that is the whole mechanism — it is there until it is not. Sculptra does the opposite: nothing is visible on the day, and the result arrives months later as collagen.
Radiesse sits across both. The carrier gel lifts and defines straight away, which is why you leave the appointment looking different. Underneath that, the microspheres sit in the tissue and act as a scaffold, and fibroblasts lay down new collagen around them. By the time the gel has gone, there is something structural in its place.
That handover is the part worth understanding. Around the two to three month mark some people think the result is fading — the gel has resorbed and the collagen has not finished building. It is the middle of the process rather than the end of it.
Full strength or diluted
The same syringe does two unrelated jobs depending on how it is prepared.
Full strength, it is placed deep for contour — along the jawline, in the midface, in the temples, or to support a nasolabial fold. It behaves as a structural product and the amount used is small.
Diluted with saline or lidocaine and spread thinly through a broad area, it stops acting as a filler altogether and works purely as a collagen stimulant. Nothing is being shaped. It is a way of improving the quality of skin over a large surface, which is how the neck, the décolleté, the upper arms and the backs of the hands are treated. That dilution is an off-label use of the product, and a well-established one.
Full strength it shapes. Diluted it does not shape anything — it changes the skin itself.
Where we use it
| Area | What it does there | Form |
|---|---|---|
| Jawline & midface | Restores support where bone and fat have receded, which reads as a cleaner line rather than added volume. | Full strength |
| Back of the hands | Sits above the tendons and veins and softens how sharply they show. Radiesse holds an FDA approval specifically for this. | Full strength or diluted |
| Neck | Crepiness and horizontal banding. Treated conservatively, across the area rather than into any one line. | Diluted |
| Décolleté | The fine vertical creasing that shows in a lower neckline and does not respond to skincare. | Diluted |
| Nasolabial folds | Deeper support under the fold, usually alongside work higher in the midface rather than on its own. | Full strength |
Radiesse or Sculptra?
Both build collagen, and the choice usually comes down to whether anything needs to be visible before the collagen arrives.
Sculptra spreads volume diffusely and gradually, over a series of appointments, with nothing to see in between. It suits faces that have lost volume broadly and evenly, and people who are comfortable waiting for it.
Radiesse gives you a result on the day and then improves on it. It suits a defined target — a jawline, a temple, a pair of hands — and anyone who would rather not spend three months wondering whether anything is happening. Where the skin itself is the problem rather than the shape, the diluted form is usually the better answer than either.
Sculptra or filler — which one do I need? →
Where it is not used
Not in the lips. The product forms nodules there, and because it cannot be dissolved, a nodule in the lip is a long problem. Not superficially anywhere — it is placed deep, and placed too close to the surface it can show as a white or lumpy line. Not under the eye, where the skin is too thin for it.
And it is not the answer for laxity on its own. If the complaint is that the skin has gone slack rather than that the face has lost structure, that is a tightening question — XERF or Ultherapy. The two are often done alongside each other; one supports, the other contracts.
Common questions
How long does Radiesse last?
Around a year, often longer. The gel that carries the microspheres resorbs within the first few months, so some of what you see on day one settles. What replaces it is your own collagen, and that is the part that holds. People who come back for a second round usually need less than they did the first time.
Is Radiesse a filler or a biostimulator?
Both, which is what makes it useful. The gel carrier behaves like a filler and gives structure the same day. The calcium hydroxylapatite microspheres suspended in it prompt your own collagen over the following months. Sculptra is the pure biostimulator — nothing visible on day one — and hyaluronic acid filler is the pure filler.
Can Radiesse be dissolved?
No. It is not hyaluronic acid, so hyaluronidase does nothing to it. That is why it is placed conservatively and built up over sessions rather than corrected afterwards, and why it is not used in the lips or close to the surface.
What is hyperdilute Radiesse?
The same product, mixed with saline or lidocaine and spread thinly across a wide area instead of placed for contour. At that dilution it stops behaving like a filler and works only as a collagen stimulant, which is how the neck, décolleté and upper arms are treated. It is an off-label use and a well-established one.
Does Radiesse work on the back of the hands?
Yes, and it holds an FDA approval specifically for restoring volume to the back of the hands. It sits above the tendons and veins and softens how sharply they show. Hands are one of the areas where the result reads most clearly.
How many sessions will I need?
Contour work in the jawline or midface is often a single appointment with a review at six to eight weeks. Diluted work on the neck, décolleté or hands is usually a short series, commonly two or three sessions a month or so apart, because it is building collagen across a broad area rather than placing volume.
Can I have Radiesse in Sunnyvale?
Yes. Injectables run at both sites with the same clinical team.
Medically reviewed by Seth Eberlin, MD, Medical Director, Essential Bella. General information, not a substitute for an in-person assessment.