The ingredient, explained

Hydroxyapatite

A primary study examines this ingredient in the specified preparation and setting.

AbrasiveBulkingEmulsion stabilising

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Ingredient guide

What it is and what it does

Hydroxylapatite -Ca5-OH--PO4-3-

About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗

Abrasive: Provides mechanical surface cleaning or polishing.
Bulking: Changes a product's bulk density.
Emulsion stabilising: Helps keep an emulsion from separating.

Function definitions: European Commission ingredient function definitions (SCCNFP/0299/00, pages 16 to 20) ↗

Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.

A closer look

What the research shows

Human topical treatment study

Biomaterial did not significantly speed re-epithelialization versus standard secondary-intention wound care, but reduced pain and measured skin thickness.

What this does not tell us

Mixture and medical surgical defects; no isolated hydroxyapatite effect. Hydroxyapatite present in both arms of separate injected-hand-filler study, so not selected for differential efficacy.

Sources for this summary. PubMed 37647156 ↗

Research review checked Oct 1, 2026

Bounded review of local candidates, exact-name indexed primary journal/PubMed safety and topical searches; not a systematic review.

Ingredient research is not proof that a product containing this ingredient works.