INTERDENTAL PRO replaceable toothbrush heads, designed for cleaning between teeth and hard-to-reach areas. Interdental toothbrush refill kit. Thanks to the different levels, it gently cleans teeth and hard-to-reach areas to help prevent cavities. The product has a small brush head and a long, thin neck, designed for hard-to-reach spaces. The brush head includes a soft tongue cleaner for fresh breath and a wear indicator to maximize the product's benefits. The blue color of its bristles fades when it's time to replace it with a new brush head. Keep the handle and insert the brush head until you hear a click. Use it until the color fades, then change the brush head again. With a non-slip grip to help improve your oral hygiene with ultra-precise cleaning. It is recommended that you change the brush head every 3 months or when the color of the filaments begins to fade. Keep the handle and use the Fluocaril Interdental PRO replaceable brush head refill kit.