Experience superior gum care with the Philips Sonicare Optimal Gum Care Replacement Toothbrush Heads (HX9034/65). Designed for adults, this 4-pack features soft, densely-packed nylon bristles that gently clean along the gumline while improving gum health by up to 100% compared to manual brushing. These white replacement heads are compatible with all Philips Sonicare click-on rechargeable toothbrush handles. Equipped with advanced BrushSync™ Technology, the heads sync with BrushSync-compatible handles (like DiamondClean Smart or ProtectiveClean) to provide optimal mode-pairing and timely replacement reminders. Dentists recommend Philips Sonicare as a leading power toothbrush brand, trusted for removing up to 6x more plaque along the gumline than manual toothbrushes. Ensure healthier gums and a deeper clean with every brush — ideal for those seeking a gentle yet effective oral care upgrade.