
사실 · The fact nobody told you
Enamel never grows back. So we put it back.
Enamel is the hardest thing your body makes, and the only part of you that can never regrow. Every coffee, soda, citrus and hard-bristled scrub pulls a little more mineral out of it.
Ordinary toothpaste cleans what is left and sends you on your way. It puts nothing back.
Enamel Repair Armor is loaded with 7.5% nano-hydroxyapatite, the exact mineral your enamel is built from, milled fine enough to settle into the damage and stay there.

Drag the line. This is what a tube is built to do.
Left: enamel after years of acid and scrubbing, magnified. Right: the same surface with its cracks and pores filled back in with mineral.
Worn enamel
Rebuilt
- First brushThat glassy, just-polished feel when you run your tongue over your teeth.
- Around week 2Ice water, hot coffee, cold air: the zing starts to go quiet.*
- Around week 4A brighter, glossier smile, with no peroxide involved.
*Sensitivity results come from published trials of nano-hydroxyapatite toothpaste, see the studies below. The image is an illustration, not a photograph. Results vary from person to person.
대가 · The price of waiting
It doesn't hurt until it's expensive.
Thin enamel gives you years of quiet warnings before it sends the bill.

- Dull and yellowEnamel thins and the yellow dentin underneath starts to show through.
- The zingCold drinks and sweet food begin to bite. That is exposed dentin talking.
- Chips and cracksEdges turn see-through, then rough. Small pieces break away.
- The drillA cavity breaks through. From here, only a dentist can help.
The bill for waiting
Typical US prices per tooth without insurance.
원리 · How it rebuilds
Three things happen every time you brush
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It finds the damage
Each particle is up to 1,000 times thinner than a hair. They are pulled toward the weak, mineral-starved spots in your enamel.
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It fills the gaps
The particles pack into micro-cracks and into the tiny open channels that carry cold straight to the nerve.
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It becomes part of the tooth
The mineral bonds with your own enamel into a smooth, dense new layer. Every brush adds to it.

7.5%, printed on the front of the tube
Check the tube in your bathroom. Hydroxyapatite is almost certainly not on it, because there is none inside. Plenty of the brands that do use it will not tell you how much. Ours is 7.5% by weight, in every squeeze.
- Regular toothpaste0%
- Whitening toothpaste0%
- Enamel Repair Armor7.5%
Hydroxyapatite content. Typical drugstore formulas contain none.
- Active mineral
- 7.5% nano-hydroxyapatite
- Fluoride
- None
- Flavor
- Natural peppermint, 0.3% menthol
- Size
- 120 g (4.23 oz), about two months of brushing twice a day
Most toothpaste cleans. This one rebuilds.
Fluoride hardens the enamel you still have. Whitening pastes scrub or bleach it. Hydroxyapatite adds enamel's own mineral back.

Compared with typical drugstore formulas. Individual products differ.

후기 · From people who use it
What it did for the people who bought it
“Within three days my teeth felt stronger and teeth sensitivity disappeared unless the item was very cold. Love it. Will buy again.”
Kinte
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“This tooth paste it’s great, works really good on my sensitive teeth, thank you.”
Anthony O.
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“Excellent how it works, better than commercial toothpastes.”
Sonia S. Translated from Spanish
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“I love this toothpaste, very good, and it leaves a very good taste.”
Ana P. Translated from Spanish
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“I got it and started using it and I think I like it!!! My teeth feel clean!!”
Soledad Translated from Spanish
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“Love it. Need to purchase again.”
Omari
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“I liked it, very good toothpaste. The taste, and for using on my teeth.”
Jael G. Translated from Spanish
Reviews from buyers of this toothpaste. Results vary from person to person.

근거 · The receipts
We didn't invent this. Dentistry has tested it for decades.
Hydroxyapatite toothpaste has been sold in Japan since 1980 and has gone head to head with fluoride in controlled trials. Four of the results:
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It held its own against fluoride
In an 18-month double-blind trial in adults, hydroxyapatite toothpaste protected teeth from new cavities as well as a standard fluoride toothpaste.
Paszynska et al., Frontiers in Public Health, 2023
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It rebuilt early enamel damage
In an in-situ study, nano-hydroxyapatite toothpaste remineralized early enamel lesions on a par with fluoride.
Najibfard et al., The Journal of Clinical Dentistry, 2011
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It cut sensitivity within weeks
In a double-blind randomized trial, nano-hydroxyapatite toothpaste significantly reduced tooth sensitivity after 2 and 4 weeks.
Vano et al., Quintessence International, 2014
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It left teeth whiter and glossier
Hydroxyapatite toothpaste whitened and polished the enamel surface, and the effect grew with the concentration.
Niwa et al., Journal of Materials Science: Materials in Medicine, 2001
These studies tested hydroxyapatite toothpastes at concentrations between 3% and 15%, not this exact formula. Results vary from person to person.
사용법 · How to use it
Brush like always. Then don't rinse.
A pea-sized amount
On a dry brush. More paste does not mean more repair.
Two minutes, twice a day
Morning and night. Brush gently: the mineral does the work, not the pressure.
Spit, don't rinse
Leave the thin film on your teeth and wait 30 minutes before you eat or drink. That is when the mineral settles in.


90-day money-back guarantee
Smoother teeth in 90 days, or you pay nothing.
Run your tongue across your teeth after the first week. Then take a sip of something ice cold. If Enamel Repair Armor has not earned its place by your sink within 90 days, email us and we refund every cent.
자주 묻는 질문 · Questions
What people ask before they switch
What exactly is nano-hydroxyapatite?
Hydroxyapatite is the calcium phosphate mineral that makes up about 97% of your enamel. Nano means it is milled into particles small enough to settle into microscopic cracks and pores.
It was first developed for astronauts, who lose minerals from their teeth and bones in zero gravity, and it has been used in Japanese toothpaste since 1980.
Is a fluoride-free toothpaste really enough?
Hydroxyapatite toothpaste has been tested directly against fluoride toothpaste in controlled trials and kept pace with it (see the studies above). If your dentist has prescribed a high-fluoride paste, keep using it and ask about adding this one.
Can it fix a cavity?
It can rebuild early weak spots, the chalky white patches where a cavity starts. Once there is an actual hole, only a dentist can fill it. That is exactly why you start now and not later.
How fast will I notice anything?
Teeth usually feel smoother and glassier within the first few brushes. In published trials, sensitivity dropped within 2 to 4 weeks of brushing twice a day. Brightness and gloss build over the following weeks.
Does it whiten?
Yes, without peroxide. It fills the microscopic roughness that traps stains and scatters light, so teeth look brighter and glossier. It will not bleach them past their natural shade.
Is it safe if I swallow some?
Hydroxyapatite is the same mineral your teeth and bones are made of, and there is no fluoride in the formula. As with any toothpaste, spit it out after brushing and help young children use a small amount.
Can I use it with an electric toothbrush, braces, crowns or veneers?
Yes to all of them. It works with any toothbrush, and it is fine around braces, crowns and veneers.
How long does one tube last?
A tube holds 120 g (4.23 oz), about two months for one person brushing twice a day. That is why the 3-tube bundle is the one we recommend: half a year of repair for the price of two tubes.
What if it does nothing for me?
Then it costs you nothing. You have 90 days to try it. If you are not happy, write to info@moonwhiteshop.store and we refund you.
Enamel Repair Armor is a cosmetic toothpaste. It is not intended to diagnose, treat, cure or prevent any disease and does not replace your dentist.


