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Biostimulators

Calcium Hydroxylapatite (CaHA)

Calcium hydroxylapatite (CaHA) is a biocompatible and biodegradable molecule with both biostimulating and tissue-supporting effects. Its microspheres of CaHA are placed beneath the skin within a gel carrier. Because of their ability…

2 min read Updated: 28 October 2026 Dr. Selin Zehra Uçar
Calcium Hydroxylapatite (CaHA)
On this page
  1. Calcium Hydroxylapatite (CaHA)
  2. What Is Calcium Hydroxylapatite (CaHA)?
  3. How Does CaHA Work?
  4. What Makes the CaHA Result Distinctive
  5. Where Is Calcium Hydroxylapatite (CaHA) Used?
  6. How Is a CaHA Treatment Planned?
  7. When Do Results Appear?
  8. Who Might It Suit?
  9. Natural Appearance and Patient Safety

Calcium Hydroxylapatite (CaHA)

What Is Calcium Hydroxylapatite (CaHA)?

Calcium hydroxylapatite (CaHA) is a biocompatible and biodegradable molecule with both biostimulating and tissue-supporting effects.
Its microspheres of CaHA are placed beneath the skin within a gel carrier.

Because of their ability to stimulate collagen production, CaHA biostimulators have long been used in aesthetic and regenerative medicine.

How Does CaHA Work?

The effect of CaHA is assessed in two phases:

  • Early phase: the gel carrier provides temporary support to the tissue
  • Over time: fibroblast activity increases around the CaHA microspheres and new collagen synthesis is stimulated

While the carrier gel is gradually absorbed by the body, the CaHA particles help strengthen the tissue structure through collagen stimulation.

As a result, the effect is not limited to temporary fullness; a biological tissue renewal process begins.

What Makes the CaHA Result Distinctive

The goals of CaHA treatment are:

  • Increased skin firmness
  • Improved tissue quality
  • Support for lifting of sagging areas

CaHA is a biostimulator often chosen when a faster effect is expected alongside collagen stimulation.

The aim is not excessive volume or artificial fullness after treatment; natural results are essential.

Where Is Calcium Hydroxylapatite (CaHA) Used?

CaHA biostimulators have a wide range of uses on the face and body. The areas most often assessed are:

  • Face (cheeks, lower face and jawline support areas)
  • Neck
  • Décolletage
  • Backs of the hands

In some cases it may also be used to support tissue quality on body areas such as:

  • The back of the upper arms
  • Above the knees
  • Around the abdomen

How Is a CaHA Treatment Planned?

  • Skin quality and the degree of laxity are assessed
  • The treatment areas are determined
  • Where needed, the product may be diluted to different ratios
  • The treatment is often performed with a cannula

CaHA treatments are planned individually with the anatomy of the face and body in mind.

When Do Results Appear?

With CaHA:

  • Tissue support may be felt early on
  • Effects related to collagen production begin within 4–6 weeks
  • Changes in tissue quality become more visible within 2–3 months

How long the effect lasts may vary depending on the treatment area and individual factors.

Who Might It Suit?

After a medical assessment, CaHA may be planned for people who:

  • Have skin laxity and loss of elasticity
  • Are starting to show a tendency to sag
  • Need both tissue support and collagen stimulation
  • Want a natural, controlled result

Natural Appearance and Patient Safety

The core approach of CaHA treatment is to support the tissue structure while respecting facial and body anatomy.
The entire assessment and treatment process is planned individually, with patient safety as the priority.

Book Calcium Hydroxylapatite (CaHA)

We will assess together whether it suits you.

This page is for general information. Suitability, possible side effects and expected results are assessed at a medical consultation; results vary between individuals.

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