Kindred Labs Bamboo Toothbrush

Yes, concentration matters—but not in the way most brands want you to think.

The "10%" Marketing Trick
Many brands advertise "10% hydroxyapatite" by listing the percentage of the raw ingredient before it's mixed into the final formula.
Once water, glycerin, and other ingredients are added, the actual concentration in the finished product is often less than 2%.
It's not lying. It's just misleading.

✅ Why 7.5% Is the Right Amount
7.5% weight-by-weight (w/w) is the concentration used in clinical studies proving enamel remineralization, sensitivity reduction, and cavity prevention.

The Bottom Line
Most brands won't tell you the finished product concentration. There's a reason.
Kindred Labs lists the actual amount you're getting in every squeeze—not the amount before dilution.
We're transparent because we're confident.

Most regular toothpastes rely on fluoride and abrasives to harden enamel and remove stains. That can help protect teeth, but it doesn’t actually replace lost enamel—and over time, heavy abrasion can be rough on the surface.

Kindred Labs uses nano-hydroxyapatite, the same mineral your enamel is made of. Instead of chemically hardening enamel like fluoride does, nano-hydroxyapatite physically integrates into the tooth, filling micro-defects and reinforcing enamel where it’s worn down.

It’s a repair-first approach, not a polish-and-mask one.

It can remineralize early-stage enamel lesions (sometimes called “incipient cavities”).
It cannot rebuild deep cavities that have already penetrated dentin.

In other words:
- Early damage → yes, it can help
- Advanced decay → no toothpaste can replace a dentist

Nano-hydroxyapatite (nHAp) is a biocompatible mineral that's identical to what your teeth are naturally made of. Originally developed to help astronauts with bone density loss.

Fluoride works by chemically altering enamel, making it more acid-resistant. It strengthens what’s already there.

Nano-hydroxyapatite works by replacing what’s missing. The particles bind to enamel, fill microscopic damage, and become part of the tooth structure itself.

(TL;DR) Think of it like this:

• Fluoride = hardening existing walls
• Nano-hydroxyapatite = rebuilding damaged bricks

Yes.

Kindred Labs contains no animal-derived ingredients and is not tested on animals at any stage of formulation or production.

Yes—when properly formulated.

Nano-hydroxyapatite has been:

• Studied for decades in dental and orthopedic applications
• Used in Japan for oral care since the 1980s
• Shown to be non-toxic, non-bioaccumulative, and not absorbed systemically

Nano-hydroxyapatite particles in Kindred Labs toothpaste are much smaller, allowing them to penetrate enamel micro-cracks and bind more effectively. Regular hydroxyapatite mainly sits on the surface.

Yes. Kindred Labs toothpaste is formulated without fluoride and does not contain ingredients that pose a risk from small, incidental swallowing.

It uses nano-hydroxyapatite, a mineral identical to what naturally makes up teeth and bones, which is considered biocompatible and non-toxic in oral care use.

That said, toothpaste is still meant to be spit out, and young children should always brush under adult supervision.

Many people notice reduced sensitivity within 1 to 2 weeks of regular use, depending on the cause and severity of sensitivity.

Yes—indirectly. It smooths enamel and fills micro-defects, which improves light reflection and makes teeth appear whiter. It does not bleach or strip enamel.

studies show that nano hydroxyapatite effectively whitens teeth.

It can remineralize and reinforce early enamel damage by filling microscopic defects.

However, It does not regenerate enamel once it’s completely lost or repair deep cavities.

With twice-daily use, one tube typically lasts 6-8 weeks, depending on how much you use per brush.

It’s smooth and lightly foaming—not gritty. The formulation uses low-abrasion ingredients designed to be gentle on enamel.

Yes. For best results, wait 20–30 minutes after brushing before using mouthwash so the active ingredients can bind to enamel.

Yes. By supporting oral balance and reducing odor-causing bacteria, it can help improve breath—especially when used consistently.

Nano hydroxyapatite is regarded as safe by the FDA.

Use it twice daily, morning and night, just like a regular toothpaste.

Yes. They’re not chemically incompatible.

That said, Kindred Labs is formulated to work without fluoride, so adding it isn’t necessary to get the intended benefits.

Hydroxyapatite is an inorganic compound formed of calcium and phosphate.

Unopened, the shelf life is 24 months.

Once opened, it’s best used within 12 months for optimal freshness and performance.

This is based on preservative stability, ingredient integrity, and moisture exposure

Yes. If you’re not satisfied, you’re covered by our 60-Day money-back guarantee. Full details are available on our returns policy page.

Orders are processed within 1–2 business days. Estimated delivery times are:

• United States: 4–14 business days
• International: 7–20 business days

Delivery times may vary depending on your location and local customs processing.