Radiesse is an injectable filler used to fill facial wrinkles or improve volume in the hands. It is also used as a procedure for skin elasticity, but approval status and supporting evidence differ by area and purpose.
The main ingredient is calcium hydroxylapatite (CaHA) microparticles, the same mineral that makes up bone and teeth. At Cellinique, the official procedure name is Signature Radiesse.
3-line summary
Radiesse is a filler made by mixing CaHA microparticles into a gel.
Areas approved in the United States are facial wrinkles and the hands. Areas often advertised, such as the neck, arms, and abdomen, are not included in that approval.
In data pooling 5,081 procedures, 173 adverse events were reported, most of them nodules.
The filling role and skin elasticity are examined together
Radiesse is used to fill hollow areas or deeply folded wrinkles. The literature has also addressed skin elasticity and a tighter-looking appearance of the skin.
What was studied was not CaHA isolated as an ingredient on its own, but the actual formulation in which CaHA microparticles are mixed into a gel. It should therefore be judged by checking the product’s ingredients and intended use, rather than grouping it with “collagen boosters” of other ingredients as the same procedure.
Approved areas and studied areas are not the same
In the United States, the areas for which Radiesse is approved are facial wrinkles and the hands. Correction of facial fat loss due to HIV infection has also been approved separately.
| Area and condition | U.S. approval status | What to check |
|---|---|---|
| Facial wrinkles and folds | Approved | Correction of moderate to severe facial wrinkles, including nasolabial folds |
| Facial fat loss due to HIV infection | Separate approval | Correction of reduced facial fat |
| Hands | Approved | The area outside the face with confirmed U.S. approval |
| Décolleté | Not included in U.S. approval | The area below the neck and above the chest; approved in the European Union |
| Neck, feet, arms, thighs, abdomen, and others | Not included in U.S. approval | Used in clinical practice, and a tighter-looking appearance has been reported, but evidence confirmed by comparative studies is limited |
Nasolabial folds are an area included in U.S. approval. Using it for elasticity is judged on separate research data, not because that use is an approved indication.
The most frequently reported adverse event is nodules
In data pooling 5,081 procedures from 21 papers, 173 adverse events were reported. That corresponds to 3% of all procedures.
| Reported adverse event | Count | Share of 173 adverse events |
|---|---|---|
| Nodules | 166 cases | 96% |
| Persistent inflammation and edema | 4 cases | 2% |
| Persistent redness | 2 cases | 1% |
| Overcorrection | 1 case | 1% |
A nodule is a lump-like clustering. Most reported nodules were not visible on the surface and resolved without separate treatment. Of these, 49% occurred in areas with a lot of movement.
This dataset assessed Radiesse’s overall safety as favorable, while also recording actual adverse-event cases, including nodules.
In consultation, confirm the ingredient, area, and purpose
The name “collagen booster” alone does not make clear which ingredient is used. If the ingredient differs, the studies to consult and the adverse events also differ.
In the clinic, you can check the following.
- □ “What is the ingredient name used in this procedure?”
- □ “Is the area I would receive it in an approved area?”
- □ “Is the procedure for filling wrinkles or for skin elasticity — which purpose?”
- □ “How do you respond if a nodule forms?”
Frequently asked questions
Q1. Is Radiesse a regular filler, or a collagen booster?
It is an injectable filler made by mixing CaHA microparticles into a gel. It is used to fill hollow areas and wrinkles, and because skin elasticity and a tighter-looking appearance have also been studied, it is commonly called a collagen booster.
Q2. Can it be used for nasolabial folds?
Nasolabial folds are facial wrinkles included in the U.S. approval scope. Whether it is actually applied is decided after looking at wrinkle depth and facial condition.
Q3. Can it also be used in the neck or arms?
There is data on clinical use in the neck, arms, abdomen, and similar areas, but they are not included among areas approved in the United States. Before a procedure, the evidence for that area and the intended use should be confirmed.
Q4. Does the CaHA placed with Radiesse stay in the body permanently?
CaHA is a material that breaks down inside the body over time.
Q5. Can nodules form?
In the pooled analysis, the most frequently reported adverse event was nodules. Most were not visible on the surface and resolved without separate treatment, and they were often reported in areas with a lot of movement.
Results, duration, and suitability vary with individual skin condition, age, and lifestyle, and the same outcome cannot be guaranteed.
Procedures may cause temporary redness or swelling, and contraindications may apply, so please confirm these during your consultation.
This article is general information and does not replace individual medical care. Please confirm diagnosis and treatment suited to your condition during a consultation.
Source materials
- U.S. FDA: PMA P050052, Radiesse Injectable Implant (facial wrinkles and folds, 2006)
- Kadouch JA et al. (2017), J Cosmet Dermatol: Calcium hydroxylapatite: A review on safety and complications (PMID 28247924)
- Galadari H et al. (2024), Int J Dermatol: A systematic review of Radiesse® (calcium hydroxylapatite): evidence and recommendations for the body (PMID 38390986)
Related reading
More detailed information on ingredients, wrinkles, elasticity, and safety continues below.
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