
Your Questions, Answered
What's so bad about plastic toothbrushes?
What's so bad about plastic toothbrushes?
Most toothbrushes use nylon bristles, made from petroleum.
Nylon is plastic.
Every time you brush, microplastic fragments break off and enter your mouth, digestion, and bloodstream.
Twice a day. 365 days a year.
And when you're done, the brush sits in landfill, or the ocean, for 500 years leaching toxins. One billion plastic toothbrushes are thrown away every year in Europe alone.
KYND brushes are fully biodegradable — handle, bristles, and the box it came in.
Fishing lines, tents, bags, rain coats, nuts and bolts... and your toothbrush? All made from nylon.
But I already use a bamboo toothbrush....
But I already use a bamboo toothbrush....
Good instinct — you're already ahead of most people.
But here's what the bamboo toothbrush industry doesn't tell you: almost every bamboo toothbrush on the market still uses nylon bristles.
The same petroleum-based plastic as a regular toothbrush. The handle composts. The bristles don't — and they're still shedding microplastics into your mouth every single day.
The handle was never the problem. The bristles are.
KYND uses natural horsehair bristles — the original bristle material, used for thousands of years before nylon existed. Zero plastic. Zero compromise.
Is it different to a regular toothbrush?
Is it different to a regular toothbrush?
A little, yes. And that's a good thing.
Because the bristles are 100% woven into the head — no glue, no chemicals holding things in — a few hairs may naturally shed in your first few uses while the bamboo acclimates to your bathroom's humidity. Bamboo expands in heat and humidity, and contracts as it dries.
It settles within a few brushes — then it's smooth sailing.
It's not perfect, but real materials behave like real materials. That's the trade-off for zero plastic, zero toxins, zero shortcuts.
If you're uncomfortable with a few bristles in your mouth, this product is not for you. Sorry!
Still deciding between horsehair and nylon? Read the full comparison — then come back and grab yours.
What are KYND toothbrushes made of?
What are KYND toothbrushes made of?
Sustainably sourced, single piece bamboo handles, ethically sourced & sterilised horse hair bristles, and a small amount of beeswax to coat the handles.
That's it.
Zero plastic. Zero nylon — not even bio-nylon or castor oil-based bristles, which still shed microplastics. Zero BPA, phthalates, or PFAS. No glue, no synthetic coatings, no nonsense.
Fully biodegradable - ready for compost, box and all, when you're done.
Horse hair bristles sound weird...
Horse hair bristles sound weird...
We get it!
It sounds unusual because most of us grew up with plastic. But natural hair bristles were the standard for thousands of years before nylon was invented in the 1930s.
Horse hair is naturally flexible, soft on gums, and doesn't shed microplastics.
Once you try it, going back to "polybutylene terephthalate" feels weird.
How is the horsehair sourced? Is it ethical?
How is the horsehair sourced? Is it ethical?
The right question to ask — and the first one we asked ourselves before we ever placed an order.
100%. KYND horsehair comes from routine grooming — natural mane and tail trimming, plus hair gathered during daily horse care. The hair would shed anyway. The horses don't notice.
We never use hair sourced as a byproduct from animals processed for food or industrial slaughter — full stop. Our supply is cruelty-free, animal-friendly, and verified directly with our supplier. No horse is harmed, restrained, or killed for a KYND brush.
If we couldn't do this kindly, we wouldn't be doing it at all. The brand isn't called KYND by accident.
How are the bristles sterilised?
How are the bristles sterilised?
121°C high-pressure steam for 20 minutes — the same medical autoclave standard used to sterilise surgical instruments. After steam, the bristles get a natural plant-extract soak for added antimicrobial protection.
No silver ions. No synthetic antibacterials. No bleach. No industrial chemicals. Just heat, pressure, and plants.
The result is clean, natural bristles with zero toxic residues.
How long do they last?
How long do they last?
Each brush lasts 2-3 months, same as any quality toothbrush.
A box of 4 gives you a full year's supply!
Unlike nylon bristles that fray and shed microplastics, natural bristles maintain their integrity right to the end.
So every order is a tree planted?
So every order is a tree planted?
Yes. And proudly so!
Every KYND order helps fund tree planting through Ecologi — one of the world’s most trusted climate platforms, with millions of trees planted globally.
We use bamboo because it’s one of the fastest-growing and most renewable materials on Earth. Partnering with Ecologi felt like the natural next step.
Small daily habits matter. Brush your teeth. Plant a tree. Leave things better than you found them.
It's the KYND thing to do.
You can view our live Ecologi impact portal here →
What if I don't like them?
What if I don't like them?
Email us at support@trykynd.co and we'll get it sorted out for you, that's a promise.
But if natural bristles aren't for you and you'd prefer to go back to grinding plastic into your mouth twice a day... we'll give you your money back and wish you well.
Most toothbrushes aren't KYND...
Still brushing your teeth with plastic?
99% of toothbrushes use nylon bristles. Nylon is plastic. Made from petroleum.
And every single time you brush, microscopic plastic fragments break off and enter your mouth, your digestion, your bloodstream.
Twice a day. 365 days a year.
For your entire life.
Your partner, loved ones, and kids, too.
You avoid seed oils. You read ingredient labels. You care about what goes in your body...
But nobody ever questioned the thing grinding plastic into your teeth twice a day.
It's not your fault. Nobody thought to question it until the research started emerging.
2.3 MILLION
Microplastic particles. Per person. Per year.
From your toothbrush alone.
That's what the science says.
Not from pollution. Not from packaging...
From the thing you put in your mouth twice a day, every day, since you were a child.
They've been found in human blood, lung tissue, and placentas.
The science is no longer emerging. It's here.
"But I use a bamboo toothbrush...!"
Good instinct... But here's what they don't tell you: most bamboo toothbrushes still use nylon bristles.
The same plastic bristles as a regular toothbrush.
Bamboo handle, plastic bristles.
You're still swallowing microplastics every single day, falling victim to greenwashing.
The handle was never the problem.
The bristles are.
Microplastics are now found in human blood, lungs, brain tissue and reproductive organs.
Scientists are finding them everywhere.
A 2024 Nature Medicine study found that human brain tissue now contains nearly 5,000 micrograms of plastic per gram. That's roughly the weight of a credit card. In your brain. And levels are 50% higher than they were in 2016.
People with dementia had five times higher microplastic levels in their brain tissue than healthy people. Researchers are clear: they accumulate over time and don't leave.
Long-term effects are still unknown...
But do you want to keep adding more?
One small swap. Zero microplastics. Forever.
KYND uses horse hair bristles, the original bristle used for thousands of years before plastic was invented. Woven into a steam-carbonised bamboo handle with a touch of beeswax. That's it.
No nylon. No plastic. No synthetic coatings.
Cleans just as well without feeding you plastic.
And when you're done, the whole brush and box composts.
No landfill. No ocean. Just back to the earth.
KYND to you.
KYND to the planet.
We're proud to partner with Ecologi.
We support responsible reforestation, ecosystem restoration, and carbon removal projects worldwide. Every project is rigorously vetted by Ecologi to ensure the right trees are planted in the right places, with local communities, and that carbon removal meets strict quality criteria.