Fundamentals
What is hydroxyapatite?
The mineral your enamel is already made of, sold back to you in a tube. A plain-English explanation of the mechanism, the history, and the limits.
Guides
The background you need to read a toothpaste label properly. No affiliate roundups dressed up as education, and no claims we cannot support.
- Fundamentals
- Safety
- Practical
- Conditions
- Family
Fundamentals
Nano vs. micro hydroxyapatite
Two particle sizes, two mechanisms, and one safety argument that gets misrepresented in both directions.
Safety
Is fluoride-free toothpaste safe?
The honest answer depends entirely on what is in the tube instead. A paste that removes fluoride and adds nothing is a downgrade.
Practical
Switching from fluoride toothpaste
Less foam, a different mouthfeel, and a two-week adjustment period nobody warns you about.
Conditions
Fluoride-free toothpaste for sensitive teeth
Sensitivity has a physical cause, and hydroxyapatite addresses it physically rather than by numbing the nerve.
Family
Fluoride-free toothpaste for kids
Children under six swallow most of what you put on the brush. That is the entire argument, and it is a reasonable one.