Dentists recommend replacing brush heads every 3 months

GREAT COMPATIBILITY: The toothbrush heads are compatible with all usmile electric toothbrushes: P1, Y1S, U3, P4. usmile brush heads are designed to work together with usmile toothbrushes to provide optimal performance (4 replacement brush heads included). IMPROVED CLEANABILITY: Electric toothbrush heads have diamond-shaped bristles with a wider cross section to improve cleanability by 30%. The central bristles of the toothbrush can reduce yellow stain residue and make teeth brighter and whiter. INNOVATIVE TECHNOLOGY: The replacement brush heads adopt a new copper-free flocking technology. Compared with ordinary copper brush heads, these brush heads do not rust or yellow. INDICATING SETOLES: The color on the blue line will gradually fade to remind users when it is time to replace the head. GUM CARE AND COMFORT: The DuPont toothbrush tip has 95% roundness, without burr, to prevent bleeding gums, providing holistic care for both teeth and gums.

Best Sellers Rank: See Top 100 in Health & Household. Age Range (Description): Adult. Material: Copper. Size: 4 Pack. Color: Professional. Brand: usmile. : B09Y37VSMN. Manufacturer: usmile. Date First Available: April 16, 2022. Package Dimensions: 7.95 x 2.24 x 1.1 inches; 3.17 Ounces.