Interdental brush refill, designed for comprehensive and optimal hygiene of the interdental space. The design features longer outer bristles that fold after being inserted into the interdental space, expanding as they pass through and cleaning the inner area of the tooth. As the bristles are pulled out, they rest against each other and take food debris with them, achieving a thorough cleaning of the teeth while massageing the gums. Suitable for Yaweco Interdental Brush.