Clearingredients.
Klyyr is transparent and minimal — in how we formulate, how we label, and how we show up. Nothing hidden, nothing performative. Just clarity you can read and trust.
- Transparent
- Minimal
Let's be
hydroxyapatite, done right.
NO FLUORIDE
10% HYDROXYAPATITE
02 — The Product
NET WT 4.23 OZ
One+
Hydroxyapatite toothpaste.
Nano- and micro-hydroxyapatite — the mineral your enamel is made of — in a fluoride-free formula tuned for daily use.
View ingredients
Water, Sorbitol, Glycerin, Potassium Sorbate, Hydroxyapatite (nano & micro), Xylitol, Sodium Cocoyl Glutamate, Cellulose Gum, Xanthan Gum, Zinc Citrate, Aloe Vera, Mentha Piperita (Peppermint) Oil, Mentha Viridis (Spearmint) Leaf Oil, Menthol, Sodium Benzoate, Stevia Rebaudiana Leaf/Stem Extract
03 — On Clarity
Three / Chapters
What isklyyr?
Three answers — one for the bottle, one for the brand, one for the life it's meant to live in. Read it like a short story.
Clearintentions.
We built Klyyr for people who read labels. Hydroxyapatite at a clinically meaningful dose, in a formula you can use every morning without compromise.
- 10% nHAp
- Fluoride-free
Clearlifestyle.
Morning counter, not medicine cabinet. The tube belongs next to the towel and the coffee — part of a routine that doesn't need a lecture.
- Daily use
- Kid-safe
Three clear reasons on one self. That's the whole story.
04 — The science
Proven by the mineral —
89% of participants experienced no new tooth decay.
Why hydroxyapatite - and why the full 10%
Nano-HAp penetrates dental tubules to address sensitivity at the source. Micro-HAp coats the surface and rebuilds enamel. We use both — at the highly effective 10% concentration backed by clinical data.
05 — Journal
VIEW ALL →The slow read .
Long-form on the science, the ritual, and the people building Klyyr. Monthly, when there's something worth saying.
Featured
May '26
Nano vs. Micro Hydroxyapatite: What the Particle Size Difference Actually Means for Your Teeth
Nano and micro hydroxyapatite are both powerful remineralising ingredients, but their particle sizes make them behave differently in the mouth. Here's what the science says about how each one interacts with your enamel.
READ THE PIECE →
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04
Oil Pulling: What the Science Actually Says About This 3,000-Year-Old Ritual
Natural ingredients in modern toothpaste
How to choose the best remineralizing toothpaste
+ 4 more
See all journal entries
06 — Hydroxyapatite
Interactive particle visualization of a tooth formed from hydroxyapatite mineral particles.
The mineral
Your enamel, rebuilt.
Hydroxyapatite is the calcium phosphate mineral that makes up 97% of your enamel and 70% of dentin. It’s not a synthetic substitute — it’s what teeth are already made of.
For decades, Japan has recognized it as a clinically proven anticaries agent. Now it’s becoming the global standard for fluoride-free oral care: biocompatible, safe if swallowed, and effective at rebuilding the surface layer you lose every day.
That’s why we built One+ around 10% nano- and micro-hydroxyapatite — the concentration where remineralization actually shows up in the data.
Biocompatible
Fluoride alternative
Clinically studied
Nano + micro
01 Is hydroxyapatite actually as effective as fluoride?
Yes, when the concentration is right. Decades of Japanese clinical data — where HAp has been a recognized anticaries agent since 1993 — support 10% as the threshold for measurable remineralization. We meet it; most other brands don't.
02 Why nano AND micro hydroxyapatite?
They do different jobs. Nano-HAp is small enough to enter dental tubules and address sensitivity at the nerve. Micro-HAp coats the surface and rebuilds the visible enamel layer. Using both is how you get the full effect.
03 Can children use it?
Yes. Hydroxyapatite is biocompatible and safe if swallowed — one of the reasons we chose it. We still recommend a rice-grain amount for kids under 3 and a pea-sized amount thereafter.
04 Is it safe during pregnancy?
Hydroxyapatite is a calcium phosphate — the same mineral as bone and enamel. There are no known contraindications during pregnancy. As always, talk to your dentist or OB if you have specific concerns.
05 What's the actual ingredient list?
Water, Sorbitol, Glycerin, Hydroxyapatite (nano & micro), Xylitol, Sodium Cocoyl Glutamate, Cellulose Gum, Xanthan Gum, Zinc Citrate, Aloe Vera, Peppermint Oil, Spearmint Leaf Oil, Menthol, Stevia. That's the whole thing.
06 How does the subscription work?
One tube per month, free shipping. Skip, change size, pause, or cancel — all from your account, no chat queue, no retention guilt. The first order ships within 24 hours.
07 Is the tube recyclable?
The body is aluminum — wash it, flatten it, drop it in your curbside bin. The cap is HDPE and recyclable in most municipal streams. The carton is FSC-certified paperboard.
08 Why is it more expensive than the drugstore?
Because 10% nano + micro HAp costs roughly 30× a fluoride blend at the same volume. We make money on the subscription, not the markup. The math is on the whitepaper.