Primals

World's First Natural Bristle Sonic Head

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Yes. It fits. If your current brush head clicks onto the metal shaft without twisting, this clicks on exactly the same way. That is the first question everyone asks, so it deserves a straight answer up front. Here is why the swap is worth making: a 2025 PubMed-backed study confirmed plastic bristle heads release up to 2.3 million microplastic particles per year, roughly 3,192 particles every single brush. Here's the mechanism: nylon is petroleum-derived and cut to a uniform stiffness that does not give. At 30,000+ strokes per minute it degrades fast, shedding shards laced with BPA and phthalates onto gums 10x more permeable than skin, while sonic vibration accelerates the chemical leaching. And because those bristles are rigid, they scrape across the gumline instead of flexing with it, which is exactly why sensitivity gets worse over years of use. Horse hair is the softest natural bristle available and does the opposite. It flexes with the gums and naturally polishes teeth clean, so gentleness does not cost you the clean. Microplastics accumulate rather than pass through, driving oxidative stress and disrupting gut and hormone balance, with long-term exposure linked to chronic inflammation and fatigue. And until now, every route out cost something. Going manual meant losing the sonic clean. Buying a whole new toxin-free system meant writing off a working handle. Every "extra soft" head on the shelf was still rigid nylon on a plastic base. A few third-party heads promised to fit and arrived rattling, wobbling, or not seating at all. So the plastic kept getting reordered. PRIMALS built the world's first natural-bristle replacement heads for electric toothbrushes, engineered to click onto the handle already on your counter. Pure horse bristles hand-woven into a bamboo base. Hundreds of clinicians share PRIMALS with their patients. *PRIMALS is not affiliated with or endorsed by Philips or Philips Sonicare. Compatibility is based on handle design only. ✅ Fits all Philips Sonicare click-on handles including Protective Clean, Expert Clean, Diamond Clean, 9900 Prestige, Healthy White, Flex Care, 2 and 3 Series, Easy Clean, and the 1100, 2100 and 3100, plus the PRIMALS handle ✅ No adapters required, it clicks straight onto the drive shaft the same way your current head does ✅ The softest natural bristle available, flexing with your gums instead of scraping across them ✅ Naturally polishes teeth clean, so soft does not mean a weaker clean ✅ Hand-woven into bamboo with zero glue or synthetic adhesives, unlike plastic heads that glue nylon into a plastic base ✅ Zero microplastic shedding and zero BPA, phthalates, or PFAS touching your gums ✅ Want a firmer scrub some days? Boar bristle heads fit the same handle, so keep both Every other head that fits your handle is plastic with a different logo on the box. This is the only natural-bristle option soft enough for sensitive gums that clicks straight on. 🤝 4 heads per box, up to a year of brushing at the 1 to 3 month swap 🤝 FREE next day shipping on US orders $100+ 🤝 Subscribe for automatic delivery and never reorder plastic again We ship from California, so US orders arrive fast. Note: screw-on handles and Philips One handles are not compatible. If it clicks without twisting, you are good. The first run of the softest natural heads moves fast, and the plastic head on that handle sheds every day it stays on. 100,000+ people have already made the switch to PRIMALS. The handle you own is fine. Your gums just deserve something softer on the end of it. Click "Shop now" and give your handle bristles your gums can handle!