Why Tidalove Uses Nano-Hydroxyapatite—And Why 5% Really Matters

When we created our fluoride-free toothpaste tablets, our first concern was protecting your teeth. We didn’t want to just remove fluoride. We wanted to replace it with something backed by science, something that works.

That’s why we use nano-hydroxyapatite (nHAp)—a mineral that naturally makes up the majority of your tooth enamel—and we use it in a specific form and amount, for a reason.

What Is Nano-Hydroxyapatite, and Where Does It Come From?

Hydroxyapatite is a naturally occurring form of calcium phosphate, found in your teeth and bones. It’s not a synthetic additive—it’s what your enamel is made of.

In the 1960s and 70s, NASA researchers studied synthetic hydroxyapatite as a way to help astronauts restore lost bone and tooth minerals in space. Later, in the 1980s, Japanese scientists applied that research to dentistry, creating the first hydroxyapatite-based toothpaste. In fact, Japan became the first country to officially approve hydroxyapatite for cavity prevention in the early 1990s.

Today, nano-hydroxyapatite (nHAp) is recognized for its ability to bind to tooth surfaces, fill in micro-damage, and promote enamel remineralization.

Why 5%—Not More, Not Less?

Tidalove uses 5% nHAp in each toothpaste tablet. While some brands go higher, the science doesn’t necessarily support the idea that more is better.

What matters most is the size, shape, and purity of the particles—not just the percentage. Research shows that properly formulated nHAp works effectively at moderate concentrations when the particles are small enough to bond with the enamel and mimic its natural structure.

That’s why we use high-purity, rod-shaped nano-hydroxyapatite sourced from trusted suppliers in South Korea. It’s designed to support enamel health while staying gentle, stable, and safe.

Does Particle Shape Matter? And Is It Safe?

Yes, shape and structure matter. Our rod-shaped particles were chosen because they’re similar to natural enamel crystals and are known to form a smooth, protective surface when applied to teeth. They’re also less likely to clump or cause irritation.

In fact, multiple safety reviews—including those by European regulatory bodies—have deemed nano-hydroxyapatite safe for oral care when formulated correctly. It’s used in not only toothpaste, but also mouthwashes and dental coatings.

What Does the Research Say?

Studies have shown that well-designed nHAp:

• Helps remineralize early enamel lesions

• Reduces sensitivity by covering exposed dentin

• Forms a protective barrier against acids and plaque

And these effects are seen even at 5% concentration—again, when the quality of the particles is high.

We Let the Science Guide Us

We didn’t pick 5% nano-hydroxyapatite because it sounded good. We chose it because research shows that it works—especially when combined with the right particle design.

If you’re looking for a fluoride-free toothpaste that protects your enamel with a mineral your body already recognizes, Tidalove is a science-backed, thoughtful choice.

Have questions? We’re always happy to share studies, sources, or ingredient details.