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About Eso World

We check every material in every product and publish what we find. Every ingredient, adhesive, and coating — checked against the research, with the trade-offs and the reasoning on the product page.

Eso World

Ask any brand what's in their products.

Most go quiet.

What most brands won’t show you

The average brand that sells you a toothbrush can’t tell you what glue holds the bristles in, won’t publish a list of what’s actually in the product, and has no answer when you ask why they chose those materials.

FULL MATERIAL LISTNot disclosed
WHERE IT'S SOURCEDNot disclosed
WHAT THEY AVOIDEDNot disclosed
WHY THEY CHOSE ITNot disclosed
WHAT'S IN THE GLUENot disclosed
WHO CHECKEDNot disclosed
Standard practice
The labels

What they say vs what you can verify

File 001

"100% natural"

Natural what? Arsenic is natural.[CLASSIFIED]
File 002

"Eco-friendly bristles"

Still nylon. Still plastic. Still in your mouth.[CLASSIFIED]
File 003

"BPA-free"

BPS and BPF bind to the same receptors.[CLASSIFIED]
File 004

"Non-toxic"

Tested on adult rats. At high doses. For 90 days.[CLASSIFIED]
File 005

"Sustainably sourced"

From where? By whom? They won’t say.[CLASSIFIED]
File 006

"Free-from"

What replaced the thing they removed?[CLASSIFIED]

We asked brands what was in their products. Most couldn't answer.

Whatifabrandjusttoldyouwhatwasinit?

What Eso World does differently

This brand tells you what's in it, tells you what's not, explains why they chose it, and when they’re not sure about something, they say so.

FULL MATERIAL LISTNot disclosedOn the product page
WHAT WE LEFT OUTNot disclosedListed, with reasons
WHY WE CHOSE ITNot disclosedExplained per material
WHERE IT’S FROMNot disclosedOrigin published
WHAT WE’RE UNSURE ABOUTNot disclosedWe say so
Standard practiceEso World practice
How We Work

What we do, and what we don't.

Every material on the page.

Not buried in small print. Not behind a support email. The full material list, on the product page, before you buy.

Verified

Everything we left out, and why.

We don’t just say what’s in it. We say what isn’t — and explain why we avoided it. You can agree or disagree.

Verified

The reasoning, not just the result.

Why boar bristles and not nylon? Why pressure-fitting and not glue? The thinking is on the page so you can judge it yourself.

Verified

Honest about uncertainty.

Where the science is mixed, we say so. Where we made a judgement call, we explain it. No false confidence.

Verified

Products you’d actually use.

Toothbrushes, water filters, sleep masks. Things you reach for every day. Not wellness novelties.

Verified
Open Lab — The Numbers
Zero

Hidden ingredients

Every material we use, every reason we chose it — published on the product page. No proprietary blends.

14

Products

Oral care, water filtration, sleep, and lifestyle. Full material breakdown on every one.

4

Categories

Oral care. Water. Sleep. Lifestyle.

The Process

Read the research.

Not marketing summaries. The actual papers. Who ran the study, how many participants, what they found, what they didn’t.

Check every material.

If there’s a biological mechanism for harm and studies find effects consistent with it — we find an alternative. If no good alternative exists, we don’t make the product.

Put it all on the page.

What we chose, what we avoided, why. The evidence. The sources. On the product page, before you buy.

Let you decide.

The information is there. You can check it, disagree with it, or use it to find something better. That’s the point.

The Numbers
15
Products
3
Categories
Who We Are

Eso World started with a toothbrush. Vincent picked up a bamboo brush that said ‘natural’ on the front, turned it over, and couldn’t find out what was holding the bristles in. He emailed the brand. They didn’t know either.

So he looked it up himself. Epoxy resin. A petroleum-derived adhesive, sitting against your gums, twice a day. That was the first product. Then we checked the water filter. Then the sleep mask. Then everything else we could find where the label said one thing and the materials said another.

Now we make the products we wished existed. Every material published. Every choice explained. That’s Eso World.

Eso World Ltd — Registered in England & Wales, Company #14947193

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The Vision

You shouldn’t have to trust a brand. You should be able to check.

We want a world where you can see what’s in your toothbrush the same way you can see what’s in your food. Where ‘natural’ means something specific, and the proof is on the page.

That’s what Eso World is for.

Eso World.

Your Move

Look for yourself.

Browse Products

Everyday products. Oral care, water, sleep. Every material checked and published.

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The Research

Named studies. Real findings. What goes into everyday products.

Read articles →

Ask Us Anything

Questions about materials, research, or why we chose one thing over another. We answer all of them.

Contact →