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📚 Backed by scientific findings published in Ecotoxicology and Environmental Safety (Study ID: 40680448).

Bombshell Study Reveals:
2.3 Million Microplastic Particles Released Yearly From Plastic Toothbrushes Alone

Retchie Clint

July 14, 2025

MAKE THE CLEAN SWITCH TODAY

★★★★★ 50,000+ already made the switch

TOOTHBRUSHES SHED MICROPLASTICS

You’re Ingesting Plastic Every Time You Brush

A 2023 PubMed study (ID: 38092338) first revealed that plastic toothbrushes release up to 120 microplastic particles per brushing session — adding up to 88,000 fragments per year.

That was already disturbing. Then a 2025 study (ID: 40680448) found the real number is 26x higher — your plastic toothbrush sheds an average of 2.3 million microplastic particles per year. Add toothpaste, and it climbs to 3.5 million.

Those particles don't just stay in your mouth. They enter your bloodstream, travel through your body, and accumulate in your organs and cells.

And the worst part? Most people have no idea this is happening.

FRICTION + PLASTIC = TOXIC PARTICLES

Why Is This Happening?

Plastic bristles are made from nylon and other synthetic materials that aren’t built to withstand repeated brushing and daily exposure to moisture and heat.

Over time, they gradually degrade, releasing microscopic plastic particles into your mouth - twice a day, every day.

Here is what's happening:

Repeated brushing friction: Constant back-and-forth motion wears down the nylon bristles, causing them to fray and fragment into microplastics.

Degrades into micro & nanoplastics: Heat and saliva from your mouth further weaken the material structure, breaking down nylon bristles into micro and nanoplastics.

Absorbed into the body: These micro and nanoplastics enter your bloodstream through your highly absorptive gum & mouth tissues while also often being inadvertently swallowed.

THE HEALTH RISK ISN’T JUST ORAL

What Happens to Microplastics Once They're in Your Body?

Research shows that these tiny plastic fragments are inadvertently swallowed, absorbed through gum & mouth tissues, and even enter your bloodstream. Once inside, they travel throughout your body, embedding themselves in organs, disrupting biological functions, and triggering harmful reactions on a cellular level.

Health Effects Include:

Hormone Disruption & Infertility: Microplastics carry endocrine-disrupting chemicals like BPA and phthalates, which can affect hormone balance and contribute to reduced sperm quality, lower fertility, and reproductive issues.

Inflammation & Immune Stress: Your body treats microplastics as foreign invaders, triggering chronic inflammation that weakens immunity over time.

Toxin Accumulation: Microplastics can act like sponges, absorbing heavy metals and pesticides, then releasing them into your system.

Oxidative Stress & Cellular Damage: Long-term exposure has been linked to cell damage, DNA stress, and increased risk of degenerative diseases.

BASED ON RESEARCH, HERE’S A SAFER ALTERNATIVE

The PRIMALS Horse Bristle Toothbrush: A Plastic-Free Solution

The PRIMALS Horse Bristle Toothbrush is crafted for those who seek a luxurious and refined brushing experience - without the risks of plastics or toxins. Made with 100% soft horsehair bristles and a sustainable bamboo handle, it’s gentle on gums yet highly effective in cleaning, making it the perfect choice for sensitive teeth and a smooth, natural daily ritual.

100% soft horsehair bristles: Gentle on gums, luxurious in feel, and completely microplastic-free.

100% sustainable bamboo handle: Elegant, durable, and fully biodegradable.

Zero nylon, zero BPA: Free from plastics, toxins, and synthetic shedding.

Supports whole-body wellness: Protects gut health, hormones, and long-term vitality.

A luxury brushing ritual: The perfect harmony of gentle care and effective cleaning.

Make the Switch Now

50,000+ have made the switch to PRIMALS

Join the Movement - See What Others Are Saying

Thousands have already made the switch to a cleaner, safer brushing experience - and they’re feeling the difference.

Soft, Natural, and Great for Kids Too

I’ve used PRIMALS’ boar bristle toothbrush before and liked it, so I decided to try the horse bristle one—and I’m really happy with it so far. Only 3 days in, but the bristles are super soft and gentle on the gums. The bamboo handle feels nice in hand and dries quickly. I wanted something plastic-free that’s safe for kids too, and this totally fits the bill. My child used it without any complaints, which says a lot! Definitely sticking with this brand.

DK

soft bristles for sensitive gums!!

as good as the boar bristle toothbrushes by Primal but softer! So if you have sensitive gums this might be the way to go, either way your teeth will feel cleaner than ever! Also love that are their toothbrushes can stand, feels more sanitary!!

Alexis A

The best toothbrush I’ve ever used!

I’ve got pretty sensitive gums, so most toothbrushes either feel too rough or don’t clean well enough. This one hit the sweet spot. The horse bristles are super soft, but somehow still manage to make my teeth feel really clean. No irritation, no bleeding gums - just a smooth, gentle brush that actually works. Plus, knowing I’m not brushing with plastic is a huge bonus. If you’re looking for something soft and non-toxic, this is it. Way better than the “soft” plastic ones at the store that still feel scratchy.

JFer

Lightweight and good build!

I got the Primal’s boar bristle toothbrush a while back and got these to try out because I’ve never heard of horse bristle. They’re pretty comfortable on the teeth and I’ve noticed it’s a bit softer than the boar bristle if you prefer that, which I definitely do. It’s lightweight and well made and love that I’m not getting any nasty microplastics or nylon in my system. Would definitely recommend!