Fluoride has been used in oral care formulation for decades, but this is beginning to change. More people are now choosing fluoride-free toothpaste, wanting shorter ingredient lists and a more natural approach to everyday oral care.
In the UK, fluoride-free toothpaste now accounts for an estimated 8 to 12% of the national oral care market by value, and the segment is growing at 8 to 11% a year against just 2 to 3% for toothpaste overall (IndexBox, 2026). For formulators, that means finding an active that can stand in for fluoride’s remineralising power.
A mineral built for the job
Hydroxyapatite is the main mineral component of natural tooth enamel and dentin, which is why it has become the leading fluoride-free active for remineralisation claims. Omyadent® 100 by Omya is built on their Functionalized Calcium Carbonate technology with around 90% Hydroxyapatite content in a co-crystallised, porous structure. Omyadent®100 by Omya starts life as natural ground Calcium Carbonate sourced from the Provence region of France, which then undergoes a proprietary treatment process to form a lamellar Hydroxyapatite scaffold. The result is an ingredient rich in calcium and phosphate, with the reactivity needed to support efficient enamel remineralisation and repair microscopic surface defects, leaving teeth smoother and whiter.
Performance data
Omyadent 100® by Omya has been tested for both remineralisation and enamel protection using pH-cycling models designed to simulate the demineralisation and remineralisation that happens in the mouth.
| Test | Comparison | Result |
| Surface microhardness recovery (6-day pH-cycling model) |
5% Omyadent® 100 vs micro Hydroxyapatite and nano Hydroxyapatite, with a 1450 ppm Sodium Fluoride benchmark | Substantially higher recovery than micro and nano Hydroxyapatite, and higher on average than the Sodium Fluoride benchmark |
| Enamel erosion under acid challenge (pH-cycling model) |
5% Omyadent® 100 vs untreated enamel | Reduced enamel loss over the course of the study |
| SEM imaging of bovine enamel | 5% Omyadent® 100 with 1450 ppm Sodium Monofluorophosphate vs untreated | Visibly smoother enamel surface after remineralisation |
Key benefits
- Excellent source of calcium and phosphate for enamel remineralisation
- Repairs microscopic enamel defects for a smoother, whiter surface
- Does not rely on nano sized particles
- Halal and Kosher certified
- Effective at low usage levels, around 5% in toothpaste formulations
Technical specifications
| Property | Detail |
| INCI name | Hydroxyapatite (and) Calcium Carbonate |
| Source | Natural ground Calcium Carbonate, Provence, France |
| Natural origin index | 1 (ISO 16128) |
| Certifications | Halal, Kosher |
| Manufacturing standards | ISO 9001, ISO 14001, ISO 45001, FSSC 22000, ISO 50001 |
| Manufacturing site | Orgon, France |
| Recommended usage level | Typically 5% w/w |
| Suggested applications | Toothpaste, tooth gel, toothpowder, tooth tablets |
Applications
Omyadent®100 by Omya is versatile enough to suit a range of oral care formats, including:
- Standard and whitening toothpastes, standalone or alongside fluoride
- Children’s tooth gels, thanks to its gentle, non-abrasive profile
- Toothpowders
- Tooth tablets and other water-free formats
Get in touch
Omyadent® 100 by Omya is available now through HARKE UK & Ireland, and we’d love to talk about how it could work in your next formulation.
Get in touch with our technical team for formulation support or to request a sample.
