Pull old head out of handle with firm tug. Insert new head firmly into hole in desired direction for right or left hand used (Bump of handle should face up in correct hand). Place pea-sized portion of toothpaste on bristles and brush teeth in circular motion away from gums. To sanitize, swirl in 50/50 hydrogen peroxide/water solution. Replace head every 3 months.
Always refer to the actual package for the most accurate information