A toothbrush that’s gentle on your gums and kind to the planet. These RADIUS® Source Brush Replacement Heads keep your routine fresh while cutting down plastic waste by 93%. Instead of throwing away an entire toothbrush, simply snap in a new head and keep brushing. Small change, big impact. Each replacement head features medium bristles made from vegetable-based nylon. Fanned in RADIUS®’s signature curved bristle-bed, they’re designed to thoroughly clean teeth while massaging gums—never scratching or irritating them. With a longer neck for better reach, these eco-friendly toothbrush heads make it easy to reach every last molar with comfort and control. What Makes It Special 2-pack of RADIUS® Source brush replacement heads Medium bristle toothbrush heads made from vegetable-based nylon 93% less plastic waste than replacing a full toothbrush Curved, fanned bristle-bed cleans teeth and massages gums Long, slim neck improves reach to back teeth Eco-friendly toothbrush heads designed for performance and sustainability How to Use Snap out the old head and insert the new one into your Source handle Brush teeth as usual, letting the medium bristles clean and stimulate gums Replace every 3 months, or sooner if bristles fray Pair with the RADIUS® Source handle for a complete eco-friendly toothbrush Crafted with Purpose RADIUS® was founded on the idea that good design should benefit both people and the planet. By replacing only the brush head instead of the entire handle, plastic use is reduced by 93%. Combined with plant-based bristles and ergonomic design, these medium toothbrush heads deliver a cleaner smile with less waste.