Four brushes in one box. That's a full year of brushing, and it works out to about ten dollars each. Which matters, because most people assume going natural means paying more. Meanwhile a plastic brush releases up to 2.3 million microplastic particles a year, roughly 3,192 every single time you brush (ScienceDirect, 2025). Here's the mechanism: friction and a hollow head. Nylon is extruded petroleum filament, and dragging it across teeth and gums shaves fragments off its own tips into tissue 10x more permeable than skin. And the head itself is a sealed plastic cavity with bristles cemented in by glue, so water wicks into the tuft holes and sits there for twelve hours in the dark. That's what people are really reacting to when they replace their brush early. Rinsing it in hot water. Soaking it in mouthwash. Buying the UV sanitiser. None of it changes a glued plastic head that never fully dries. This one is 100% pure horse hair bristles, a 100% sustainable bamboo handle, and 100% glue and plastic free. 500+ clinicians share PRIMALS with their patients. ✅ 100% pure horse hair bristles, the softest natural bristle there is, gentle on sensitive gums ✅ 100% sustainable bamboo handle, fully biodegradable ✅ 100% glue and plastic free, hand-woven rather than cemented into a hollow head ✅ Free-standing sealed base so it dries upright and fast, instead of sitting wet in a cup ✅ Naturally antimicrobial bamboo, zero BPA, phthalates, and PFAS ✅ Zero microplastic shedding, because there's no plastic in the brush to shed 🎁 Every Bundle Includes: 🤝 FREE gifts with every bundle 🤝 4 brushes per box, swapped every 2 to 3 months, so one box covers a full year 🤝 FREE next day shipping, shipped from our California warehouse 🤝 Satisfaction guaranteed on every order About ten dollars a brush for a year of brushing, and nothing in it came from a chemical plant. 100,000+ people have made the switch, and this one carries 456 five-star reviews. Four in a box. Stay primal. Click "Shop now" and get the whole year in one order.