Order Now For Next Day Shipping:
5 Reasons Men Are Switching to the PRIMALS Natural Bristle Electric Toothbrush
You track your health. You watch what goes into your body. But twice a day, you press a plastic tool against one of the most absorbent tissues you have and never think twice. Testosterone levels are falling. Sperm counts are dropping. Researchers point to endocrine-disrupting chemicals, and one source sits in your mouth every morning and every night.
Choose your bristleYou already optimize everything else
You track your testosterone. You watch your diet. You train hard and recover harder. But the one tool you press against your gums twice a day, the one that sits inches from your jaw, your bloodstream, your hormones? That one never made the list. Until now.
Your electric toothbrush's nylon bristle head sheds microplastics every time you brush
Every time your electric toothbrush runs, the nylon bristles wear down and shed microplastics directly onto your gums, up to 2.3 million particles a year. Your gum tissue is more permeable than skin. Those particles don't rinse away. They absorb straight through.
Here's the mechanism:
-
Nylon wears down as it runs Sonic vibration accelerates bristle breakdown compared to manual brushing
-
Up to 2.3M particles a year Based on a 2025 peer-reviewed shedding study, 3,000+ particles per use
-
Absorbed through your gums Gum tissue is more permeable than skin, so this isn't a "rinse and forget" exposure
VISUALIZATION OF MICROPLASTICS IN HUMAN BLOODSTREAM
Those particles carry BPA and phthalates straight to your bloodstream
The microplastics shedding off a nylon bristle head aren't inert. They carry BPA and phthalates, chemicals research has linked to lower testosterone levels and reduced sperm quality. Twice a day, absorbed through your gums, for years.
What's riding on those particles:
-
BPA and phthalates are endocrine disruptors Known to interfere with hormonal signaling in the body
-
They travel on microplastic particles Nylon and its processing additives carry them directly into gum tissue
-
Linked to lower testosterone and reduced sperm quality Research shows an association between BPA/phthalate exposure and male hormone markers
You probably thought you'd already handled this
Castor oil bristles are nylon-11, a bio-based version of the same plastic. Bamboo handles change the grip, not the bristle. If the part touching your gums is still nylon, the shedding hasn't changed.
Still shedding:
-
"Castor oil" bristles = nylon-11 A bio-based feedstock for the same plastic polymer, not a different material
-
Bamboo handle ≠ bamboo bristle The handle is natural, the bristle head is almost always still nylon
-
Same shedding, different marketing If the bristle is nylon, the microplastic exposure hasn't changed
Real natural bristle. Zero nylon. Zero microplastics.
PRIMALS is the first natural bristle electric toothbrush ever made. Real boar bristle (firm) or real horse bristle (soft), both on bamboo heads. Zero nylon means zero nylon microplastics. Same powered clean at 62,000 movements per minute.
What changes:
-
Boar bristle = firm Deep, thorough clean for men who want more pressure and a stiffer brush
-
Horse bristle = soft Gentle on gums for men with sensitivity, recession, or those who prefer a lighter touch
-
Zero nylon, zero plastic bristles Nothing shedding BPA or phthalates into your gums, brush after brush
-
Still a full powered clean 62,000 movements per minute, same as a leading plastic electric toothbrush
The world's first natural bristle electric, engineered for low EMF
On the same meter, the PRIMALS Electric Toothbrush measured 30x less electric field than a leading plastic electric toothbrush. It sits inches from your jaw twice a day. Engineered lower is engineered better.
Engineered low EMF: 30x less electric field and 11x less magnetic field than a leading plastic electric toothbrush (300 V/m vs 10 V/m; 88 vs 8 µT), measured with an ERICKHILL RT-100 meter, averaged across 100+ readings at the same distance and mode. No health effect has been established at typical toothbrush EMF levels. The international public-exposure reference level is 100 µT (ICNIRP, a scientific body, not a government limit). We simply measured the exposure and engineered ours lower.
Shared by more than 1,000 clinicians who received samples and were never paid to review them. Evaluations powered by FrontrowMD.
Cut the plastic. Cut the disruptors.
Keep the
powered clean you're used to, minus the daily nylon exposure.
Two bristle options. Same zero-nylon standard.
Choose your bristle
Both are 100% natural bristle on a bamboo head. Both run at 62,000 movements per minute with 30x less electric field. The only difference is how they feel.
A deep, thorough clean with real boar bristle. For men who want more pressure and a stiffer brush.
- ✓ 100% real boar bristle
- ✓ Firm feel, strong scrub
- ✓ Bamboo head, zero nylon
- ✓ 2 boar replacement heads included
- ✓ 30x less electric field
A gentle, comfortable clean with real horse bristle. For men with sensitive gums or those who prefer a lighter touch.
- ✓ 100% real horse bristle
- ✓ Soft feel, easy on gums
- ✓ Bamboo head, zero nylon
- ✓ 2 horse replacement heads included
- ✓ 30x less electric field
Not sure? Most men start with boar for the firm clean. If you have gum sensitivity or recession, horse is the move. Both use the same handle and motor.
What you're actually getting
A full powered clean. Zero nylon. Built to last. Both bristle options share the same specs.
The exposure men never thought to remove
You already train, eat clean, and track your health. Most men never think to question their electric toothbrush, because it doesn't look like a health decision. But it's a plastic object you run against your gums, twice a day, for years.
PRIMALS exists to close that gap. The first natural bristle electric toothbrush. Real boar or horse bristle instead of nylon, engineered for low EMF instead of ignoring it, so the one exposure hiding in plain sight is simply gone.
Finish the routine: the full toxin-free set
Your electric toothbrush is one source. Here's what closes out the rest of your oral care routine.
Pure copper, naturally antimicrobial, removes the biofilm your brush never touches. No plastic, no microplastics, no BPA.
Shop copper scraper →
Nano-hydroxyapatite strengthens enamel with no SLS, parabens, or fluoride. The other half of a toxin-free clean.
Shop toothpaste tablets →Cut the plastic. Cut the disruptors.
You already optimize your training, your diet, and your sleep. This is the exposure you never thought to remove. The first natural bristle electric toothbrush. Real bristle, engineered for low EMF, shared by more than 1,000 clinicians. Firm or soft, your call.
✓ Free shipping on orders $100+ • ✓ 60-day satisfaction guarantee • ✓ 2-year warranty
Common questions
Based on a 2025 peer-reviewed study on toothbrush bristle shedding, a standard nylon head can shed up to 2.3 million microplastic particles a year, 3,000+ particles per use, absorbed through gum tissue that's more permeable than skin.
Boar bristle is firm. Horse bristle is soft. Both are 100% natural bristle on a bamboo head with zero nylon. Most men start with boar for the deep clean. If you have gum sensitivity or recession, horse is the better fit. Both use the same handle and motor.
Not for the bristle itself. Castor oil bristles are still nylon-11, a bio-based version of the same plastic. Bamboo-handled heads usually still use nylon bristles. If the bristle is nylon, it still sheds.
On an ERICKHILL RT-100 meter, our motor measured 30x less electric field and 11x less magnetic field than a leading plastic electric toothbrush at the same distance and mode. No health effect has been established at typical toothbrush EMF levels; we simply engineered ours to run lower.
Clinicians receive samples and are never paid to review them. Evaluations are powered by FrontrowMD, and larger-scale research is still developing. More than 1,000 clinicians currently share PRIMALS products with their patients.
Yes. It still runs at 62,000 movements per minute with 5 modes and 3 intensity levels. The bristle changed, not the motor.
No, it works for anyone. The research on endocrine-disrupting chemicals and men's hormone health is simply why this particular page speaks directly to men.