【Product Name】 Orange Care Electric Sonic Mofurashi Replacement Brush - 1 piece 【Manufacturer】 Ooki Healthcare Holdings 【Instructions for Use】 【How to Use】 ・Gently apply to teeth and gums; scrubbing is not recommended. You may feel a tickling sensation on your gums when you start using it, but you will get used to it quickly. ● Regarding toothbrush replacement: Replace when the bristles splay out. Approximately 1 month is a guideline.