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Hydroxyapatite: Did NASA make a toothpaste?

Written by: Oli Woods



Time to read 1 min

Hydroxyapatite: Did NASA make a toothpaste?

50 years ago, NASA decided that it needed to find a way to remineralise the enamel of its astronauts whilst in space. The project focused on one key ingredient in particular: Hydroxyapatite.

But what is this miracle ingredient? And why is it so important?

90% of your enamel consists of Hydroxyapatite

To put it simply, Hydroxyapatite is one of the most important minerals in your enamel. In fact, 90% of our enamel consists of of the stuff

Repairs Enamel. Stops Sensitivity.

So, how does it work? Well, when you brush with a Hydroxyapatite toothpaste it fills the tiny holes in the surface of your enamel that cause sensitivity. Sensitivity is cause by the underlying layer of dentine becoming exposed, so the Hydroxyapatite helps to form a protective layer over this dentine. By remineralising the enamel, it even helps to whiten and restore natural-looking gloss to white teeth. Enamel, once eroded, can't grow back – so it’s incredibly important to look after the enamel you do have.

If it’s so important, why isn’t it in every toothpaste?

Hydroxyapatite works incredibly well to reduce sensitivity and strengthen enamel, but it’s not cheap. That means you won’t find it in many common supermarket toothpastes. Be sure to check the label to see if your toothpaste contains Hydroxyapatite. 

If you struggle with sensitive teeth or weakened enamel, we recommend brushing with a Hydroxyapatite toothpaste for a 6-8 weeks. 

Key Takeaways

Brush with Hydroxyapatite to repair enamel and stop sensitivity.

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