Sensodyne Pronamel Toothbrush features ultra-soft bristles designed for gentle enamel protection. Key Features Specially designed to protect and prevent enamel erosion. Ultra-soft bristles are gentle on enamel and sensitive teeth. Patented flexible gel holds bristles for effective and comfortable brushing. Helps provide effective cleaning while being kind to enamel. Suitable for individuals concerned about enamel health and sensitivity. Usage Use gentle, circular motions to brush your teeth. Brush twice daily or as recommended by your dental professional.