The Philips Sonicare Gum Health brush head is designed to work with multiple Philips Sonicare snap-on handles. These replacement brush heads improves gum health up to 100% vs. a manual toothbrush. Reminder bristles fade to let you know when it's time for replacement. Replace your brush head 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. Genuine Philips Sonicare rechargeable electric toothbrush head 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 Improves gum health up to 100% verses a manual toothbrush Gently removes up to 6x more plaque along the gumline than a manual toothbrush