"Is Hydroxyapatite Safe?" — Every Question We Get Asked, Answered Honestly

Hydroxyapatite toothpaste is the fastest-growing category in UK oral care — and with growth comes questions. Here are honest, evidence-based answers to the ones we hear most.

Is hydroxyapatite safe to swallow?

Yes. Hydroxyapatite is the same calcium phosphate mineral that makes up around 97% of your tooth enamel and 70% of your bones. Swallowed in toothpaste quantities, it's simply digested as a calcium source. That's one reason hydroxyapatite formulas are popular for children and anyone uneasy about swallowing conventional toothpaste.

Is it safe for children?

Hydroxyapatite itself is non-toxic and child-safe. ApaCare Remineralising Toothpaste combines hydroxyapatite with fluoride at 1450ppm, appropriate from age 6 — check individual product guidance, and ask your dentist for children under 6.

Does hydroxyapatite replace fluoride?

They do different jobs. Fluoride hardens the enamel surface against acid; hydroxyapatite physically fills and rebuilds microscopic defects. Research shows the combination outperforms fluoride alone — which is why ApaCare uses a dual strategy rather than picking sides. Read the full comparison in our guide: Hydroxyapatite vs Fluoride.

Is there microplastic in hydroxyapatite toothpaste?

Not in ours. ApaCare formulations are free from SLS, titanium dioxide and microplastics — see the full ingredient standards on our Resources page.

Is hydroxyapatite toothpaste abrasive?

No — quite the opposite. Medical hydroxyapatite particles are engineered to bond to enamel, not scrub it. Teeth feel smoother because surface defects get filled. For stain removal, a gentle weekly polish like ApaCare Polish does the mechanical work without harsh abrasives.

How do I know it's actually working?

Three signs within the first month: sensitivity fades (sealed dentine channels), teeth feel noticeably smoother to your tongue, and surfaces look glossier and brighter. For measurable proof, 25+ years of clinical research from Tübingen backs every ApaCare formulation — read our story.

Still have questions? See the full FAQ or get in touch — we answer every message.