When achieving long-lasting facial rejuvenation without surgery, not all dermal fillers are created equal. While hyaluronic acid (HA) fillers like Juvederm and Restylane have long dominated the aesthetic world, Calcium Hydroxylapatite (CaHA) fillers—such as Radiesse and the newer Volassom- have risen in popularity for their exceptional durability and skin-regenerating properties.

So, what exactly makes CaHA fillers stand out? In this article, we’ll explore the top five reasons CaHA-based products deliver longer-lasting and more transformative results than their HA counterparts.

CaHA Fillers

CaHA fillers are injectable treatments that contain calcium hydroxylapatite particles dispersed within a smooth gel base. This compound closely resembles the minerals found in our bones and teeth, making it highly biocompatible.

Unlike hyaluronic acid fillers that primarily add volume and hydration, CaHA fillers stimulate collagen production, offering both immediate and long-term skin improvement. Radiesse is the most established CaHA filler, FDA-approved for use in facial contouring and hand rejuvenation. Volassom, a more recent entry, is designed for even smoother integration and regenerative results.

1. Collagen Stimulation for Long-Term Benefits

One of the most powerful advantages of CaHA fillers is their ability to stimulate collagen production in the skin. The microspheres in products like Radiesse and Volassom activate fibroblasts, which in turn boost the natural production of Type I collagen—the type responsible for firm, youthful skin.

As the initial filler gel is gradually absorbed, the skin continues to renew itself from the inside through ongoing collagen production. Over time, the treated areas appear naturally plumper, firmer, and more lifted without relying on the presence of foreign material.

With repeated treatments, patients can achieve cumulative effects, making CaHA fillers ideal for those seeking skin regeneration along with volume enhancement. In contrast, HA fillers do not have biostimulatory properties and are gradually broken down without any added regenerative benefit.

2. Stable Microsphere Structure for Slow Breakdown

Another key reason CaHA fillers last longer is their dense and stable microsphere composition. These tiny calcium-based particles degrade much more slowly than the sugar molecules found in hyaluronic acid fillers.

Radiesse, for example, uses a uniform microsphere size to provide structural integrity and controlled degradation over time. Volassom takes this a step further with even more refined particle technology, allowing for smoother integration into tissues while maintaining a slow and steady breakdown rate.

As a result, the filler maintains its lifting effect and shape longer than traditional HA products, many of which start to dissipate within 6–9 months. In comparison, CaHA fillers typically provide results that last between 12 to 18 months, and in certain individuals, effects may extend up to 2 years based on their metabolism and daily habits.

3. Superior Lifting Power and Tissue Integration

CaHA fillers are known for their exceptional structural support, which makes them ideal for deep tissue augmentation. Because of their firmness and cohesive nature, CaHA products can provide a “scaffolding” effect that lifts and supports sagging skin.

This is particularly effective in areas like:

• Jawline and chin (for definition)
• Cheeks and temples (for volume loss)
• Nasolabial folds and marionette lines (for smoothing)

Volassom is engineered for excellent tissue compatibility, ensuring even distribution and minimizing lumpiness or irregularities. Radiesse, on the other hand, is favored by professionals for its predictable lift and high G-prime (firmness).

This ability to physically lift tissue and stay in place contributes to the extended duration of results. While HA fillers may migrate or flatten over time, CaHA stays anchored, preserving facial contour for months longer.

4. Dual Action: Immediate Results + Progressive Improvement

CaHA fillers offer a two-phase benefit:

1. Instant volume correction due to the gel carrier
2. Progressive enhancement of skin texture as collagen production increases

Patients walk away from their appointment with visible enhancement, but the best results unfold gradually over the next few weeks. The skin becomes smoother, tighter, and more elastic as new collagen fibers form around the CaHA microspheres.

Volassom, in particular, is designed for progressive collagen remodeling while maintaining a soft, natural appearance. Radiesse follows a similar pattern: initial fullness followed by long-term improvements in skin density and tone.

This dual mechanism allows CaHA fillers to outlast HA fillers, which typically provide only immediate hydration and volume without influencing the skin’s natural structure.

5. Resistant to Enzymatic Breakdown

Unlike HA fillers, which are vulnerable to rapid degradation by the body’s hyaluronidase enzymes, CaHA fillers are composed of a mineral-based compound that is much more resistant to breakdown.

The calcium hydroxylapatite microspheres in Radiesse and Volassom mimic natural bone minerals, making them less likely to be absorbed quickly by the body. This ensures the filler maintains its shape and effect longer, especially in high-movement areas like the jawline and chin.

Additionally, CaHA fillers are metabolized gradually by macrophages, allowing for a slow and steady absorption that matches the pace of collagen regeneration. This prolonged metabolic breakdown means fewer touch-ups are needed, making CaHA a cost-effective choice in the long run.

How Long Do Radiesse and Volassom Last?

• Radiesse: Provides noticeable results for around 12 to 18 months, and in some cases, the effects may even extend up to two years. Its robust lifting power makes it ideal for facial contouring and hand rejuvenation.
• Volassom: Delivers similar long-lasting results while providing a smoother, more elegant outcome, making it ideal for treating finer, more sensitive facial areas. Its collagen-boosting effects also last up to 12–18 months, with continued improvement in skin texture over time.

Longevity can vary depending on:

• Injection technique
• Treated area
• Individual metabolism
• Lifestyle (smoking, sun exposure, skincare)

Is CaHA Right for You?

If you’re looking for a filler that offers instant results, long-lasting volume, and collagen stimulation, then a CaHA-based product like Radiesse or Volassom might be your best option.

They’re especially recommended for:

• Deep facial folds and volume loss
• Jawline contouring
• Chin projection
• Hand rejuvenation
• Full-face biostimulation

However, they may not be suitable for areas needing soft, subtle movement, like the lips or tear troughs—HA fillers are still better suited there.

To ensure the best results, get personalized advice from a trained aesthetic practitioner on which filler suits you.

Conclusion

CaHA fillers like Radiesse and Volassom are not just about volume—they’re about true facial regeneration. By stimulating collagen, offering superior lift, and resisting early breakdown, these advanced fillers deliver results that last longer, look more natural, and age beautifully over time. Please consult with a medical professional for detail advice