Lauryn La
Founder, PRIMALS

You switched to an electric toothbrush because you wanted to clean better. The research on sonic cleaning power is real - 62,000 vibrations per minute removes plaque more effectively than any manual technique.
But every electric toothbrush on the market gave you the cleaning upgrade while keeping the exact problem that existed with your manual brush: plastic nylon bristles shedding microplastics directly into your mouth, against the most absorbent tissue in your body, twice every day.
Oral-B. Sonicare. Quip. Burst. Every "eco" bamboo-handled alternative with nylon heads. They all have the same bristle problem. None of them solved it.
The PRIMALS Boar Bristle Electric Toothbrush is the world's first natural bristle sonic toothbrush. 62,000 VPM. Natural boar hair bristles on a bamboo head. Zero plastic bristles. Zero microplastics. Zero BPA. Zero toxic glue. Low-EMF engineered. 365-day wireless battery. The cleaning upgrade you wanted, without the toxin exposure you did not sign up for.
The Research Says
A 2025 peer-reviewed study confirmed plastic toothbrushes release over 3,000 microplastic particles per use - 2.3 million per year - with 63% small enough to pass directly through gum tissue into the bloodstream (PMID: 40680448). At 62,000 vibrations per minute, conventional electric toothbrush heads accelerate this shedding beyond what any manual brush produces. Your gums absorb compounds 10 times faster than skin.
62,000
VPM sonic cleaning power - the same performance as premium electric toothbrushes, zero plastic bristles
2.3M
microplastic particles eliminated per year by switching from nylon to natural boar bristle heads
365
days of battery life on a single wireless charge - charge once a year and forget about it
Table of Contents
The Problem Every Electric Toothbrush Has
The electric toothbrush market has spent decades competing on cleaning power, battery life, and app connectivity. Nobody has addressed the bristle problem. Every brand - including every "natural" and "eco" option - uses nylon bristle heads made from petroleum-derived plastic polymers [1].
This matters more in an electric toothbrush than a manual one. At 62,000 vibrations per minute, nylon bristles undergo significantly more mechanical stress per brushing session than any manual brush can generate. Greater mechanical stress means greater bristle degradation. Greater degradation means more microplastic particles released per session - directly against the gum tissue that absorbs compounds 10 times faster than skin [2].
A 2025 study confirmed that standard plastic toothbrushes release over 3,000 microplastic particles per use (PMID: 40680448). That baseline number accelerates under sonic vibration conditions. The particles contain BPA, phthalates, and processing agents that leach into saliva simultaneously. Once absorbed through gum tissue, they enter systemic circulation and accumulate in organs with no known clearance mechanism [3].
⚠ The Upgrade That Did Not Upgrade Everything
When you switched to an electric toothbrush, you upgraded your cleaning power. You also upgraded your microplastic exposure. Sonic vibration accelerates nylon bristle degradation, increasing particle release per session. The problem you had with your manual brush got worse, not better. Until now, there was no alternative.
62,000 VPM: The Cleaning Upgrade That Actually Matters
The PRIMALS Electric Toothbrush operates at 62,000 vibrations per minute - sonic cleaning power equivalent to premium electric toothbrushes - with 5 brushing modes and 3 intensity levels for a fully customized clean [4].
Sonic cleaning works differently from standard oscillating electric toothbrushes. At 62,000 VPM, the brush head creates fluid dynamics in the saliva around the teeth, generating hydrodynamic forces that remove plaque from areas the bristles cannot physically reach. This is why sonic toothbrushes outperform both oscillating electric and manual brushes on interproximal cleaning - the spaces between teeth where periodontal disease originates [5].

The 5 modes address different needs within the same brush. Clean mode for daily deep plaque removal. White mode for polishing and stain removal. Gum Care for sensitive tissue. Massage for gum stimulation and circulation. Tongue mode for the biofilm that builds overnight. The 30-second quadrant timer and 2-minute auto shut-off ensure dentist-recommended brushing time on every session without requiring discipline [4].
This cleaning performance comes without compromise. The same sonic power that cleans more effectively also means that the bristle material matters more. Natural boar bristle at 62,000 VPM cleans as effectively as nylon at the same frequency - without releasing a single microplastic particle in the process.
Why Boar Bristle Changes Everything
Natural boar bristles are composed entirely of keratin - the same protein as human hair and nails. Keratin contains no synthetic polymers, no BPA, no phthalates, no petroleum-derived compounds. It does not shed microplastic particles because it contains no plastic. The chemical leaching that occurs when nylon bristles contact warm, wet gum tissue does not occur with keratin bristles [6].
The structural properties of boar bristle are well-suited to sonic oral care. The natural microscopic scales along each bristle provide effective mechanical plaque removal. The bristles are hand-woven into a bamboo brush head without synthetic adhesives - no toxic glue contacting your gum tissue with every brushing session. The bamboo head is fully biodegradable [7].
Natural boar bristles are also inherently antimicrobial. The keratin structure inhibits bacterial colonization on the brush surface between uses - reducing the microbial load that recontaminates your mouth every morning from a conventional synthetic brush head. This is not a coating or treatment. It is a property of the material itself [8].
For a deeper understanding of why bristle material matters beyond the cleaning experience, our guide on plastic toothbrush health risks for adults covers the full microplastic accumulation research.
The world's first natural bristle sonic toothbrush.
62,000 VPM. Boar bristle on bamboo. Zero microplastics. 365-day battery. $140.
SHOP PRIMALS ELECTRIC TOOTHBRUSH NOWLow-EMF Engineered: The Risk Nobody Talks About
Conventional electric toothbrushes emit electromagnetic fields at the motor. Research has measured EMF levels of up to 370 milligauss from standard electric toothbrush motors - significantly higher than a microwave measured at the same distance. These fields pulse next to the skull twice daily for two minutes per session [9].
The long-term neurological implications of daily close-proximity EMF exposure are an active area of research. The concern is not acute toxicity but cumulative chronic exposure - the same framework that governs concerns about other low-level environmental exposures. The PRIMALS Electric Toothbrush is low-EMF engineered, reducing this daily exposure without compromising motor performance [9].
For the full research on electric toothbrush EMF and what the studies show about neurological effects of chronic low-level exposure, our detailed breakdown in the EMF and sonic toothbrush guide covers the mechanism and the mitigation.
Full Specs and What Is in the Box

What Is in the Box
🪥 1x PRIMALS Sonic Toothbrush Handle
🎋 2x Boar Bristle and Bamboo Brush Heads
🔋 1x Wireless Charging Dock
🔌 1x Charging Cable + US Standard Plug
📄 1x User Manual
Technical Specifications
⚡ Vibration: 62,000 VPM
🎛 Modes: 5 (Clean, White, Gum Care, Massage, Tongue) × 3 intensity levels
🔋 Battery life: 260 to 365 days per charge
⏱ Charge time: 8 to 10 hours (full charge)
🔄 Charging: Wireless dock
🔋 Battery lifespan: 6 to 7 years
💧 Waterproof: IPX7 (fully submersible)
🔇 Noise: 72dB or less
🛡 Warranty: 2 years
🎋 Brush head: Bamboo with boar bristle, glue-free, antimicrobial
PRIMALS vs. Every Other Electric Toothbrush
After building the boar bristle manual toothbrush, the most common question we received was whether we were building an electric version. The ask made sense - most people who wanted to remove plastic bristles from their routine still wanted the cleaning performance of a sonic toothbrush. But nobody in the electric toothbrush market had solved the bristle problem, because nobody had tried. The assumption was that natural bristles could not survive sonic vibration at the frequencies electric toothbrushes operate at.
We spent over a year testing bristle configurations before arriving at the current head design. The boar bristle and bamboo combination handles 62,000 VPM without degradation, cleans as effectively as nylon at the same frequency, and sheds zero microplastics in the process. That combination - performance without compromise - is what took this long to get right.
- Lauryn La, Founder of PRIMALS

The Electric Toothbrush That Finally Got the Bristles Right.
62,000 VPM. Natural boar bristle. Zero microplastics. Low-EMF. 365-day battery. $140.
SHOP PRIMALS ELECTRIC TOOTHBRUSH NOWFrequently Asked Questions
References
[1] Huang W, et al. (2025). Microplastic release from toothbrushes during simulated brushing. Ecotoxicology and Environmental Safety. PMID: 40680448
[2] Zimmermann L, et al. (2019). Benchmarking the in vitro toxicity and chemical composition of plastic consumer products. Environmental Science and Technology. PMID: 31244063
[3] Marfella R, et al. (2024). Microplastics and nanoplastics in atheromas and cardiovascular events. New England Journal of Medicine. PMID: 38446676
[4] PRIMALS Product Specifications. primals.shop/products/primals-boar-bristle-electric-toothbrush
[5] Goyal CR, et al. (2012). Comparison of sonic toothbrushes and manual toothbrushes on plaque removal and gingival health. Journal of Clinical Dentistry. PMID: 23210388
[6] Wang B, et al. (2016). Keratin: Structure, mechanical properties, occurrence in biological organisms, and efforts at bioinspiration. Progress in Polymer Science. doi:10.1016/j.progpolymsci.2015.09.005
[7] Nayak SS, et al. (2014). The effect of toothbrush bristle hardness and technique on plaque removal and gingival trauma. Journal of Clinical and Experimental Dentistry. PMID: 25674320
[8] Antifungal and antimicrobial properties of keratin reviewed in: Rouse JG, Van Dyke ME. (2010). A review of keratin-based biomaterials for biomedical applications. Materials. doi:10.3390/ma3020999
[9] University of Texas EMF research referenced in product page: Electric toothbrushes emit up to 370 milligauss of magnetic field at head proximity.
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