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Hydroxyapatite

Cleaner choiceReviewed September 18, 2026

Nano-Hydroxyapatite · n-Ha

The mineral that makes up tooth enamel and bone, used in toothpaste to rebuild enamel.

What it does

Actives & treatment

Our take

The mineral that makes up tooth enamel, used where a toothpaste would use fluoride. Real remineralisation data behind it, approved in Japan since 1980, an alternative rather than a compromise. A real alternative to fluoride with decent published data behind it, approved in Japan since 1980. If you'd rather avoid fluoride, this is the option that isn't a compromise.

What we look for

10% for remineralisation

Suitable from

Tween, 8+ · Teen, 13+ · Young adult, 20+ · Middle aged, 40+