"For a floss-like* clean. Oral-B FlossAction replacement electric toothbrush head features: - Micropulse bristles – Penetrate deep between teeth to sweep away plaque for a floss-like* clean - Delivers a clinically superior clean† *Does not replace flossing. †compared with Oral-B Precision Clean." "Direction for use: Brush your teeth at least twice a day Recommended usage: Clean the brush after use and keep in dry place Usage instructions: Refer to instruction details inside." "Do not use on children under age 3. Replace brush (head) every 3 months or sooner if brush head becomes loose due to damage."