Uniquely designed with ultra soft bristles. Compatible with the Philips Sonicare Sensitive brush head is soft on teeth and gums, yet effective on plaque. The ultra soft bristles combined with a new curved bristle field provide less pressure on teeth and gums. The brush head includes reminder bristles to ensure brush head replacement every 3 months as recommended by the American Dental Association. A fresh brush head every 3 months maximizes the effectiveness of Philips’ unique Sonicare technology. 4 standard ultra-soft (bristle) brush heads Compatible with snap on Philips handles: DiamondClean, Flexcare, HealthyWhite, 3 Series Gum Health, 2 Series Plaque Control, and Essence+ handles ¢#1 Recommended power toothbrush brand by Dental Professionals ¢Ultra soft bristles to deliver a gentle, yet effective cleaning ¢25% softer than our standard ProResults brush head