18 offers from CHF 65.90 (last updated: 12.01.2020) immediately available product ratings & extensive product information prices and information for PHILIPS Sonicare ProtectiveClean 4300 (HX6807/24) on Switzerland's largest price comparison | Toppreise.chFind support for your 4K LCD monitor with Ultra Wide-Color 328P6VJEB/00. Discover user manuals, FAQs, hints & tips for your Philips product.Sonicare-tannbørsten fra Philips bidrar til å gjøre tennene hvite. Denne Philips Sonicare elektriske tannbørsten hjelper deg med å fjerne og redusere misfarging på tennene for et strålende smil. This Internet page displays only price comparisons among different offers. There is no direct purchasing option or support. All information is provided without guarantee. All pric Even the extra soft bristles on Philips Sonicare brush heads must maintain a certain amount of stiffness to effectively remove plaque. Studies show that bristles begin to lose their stiffness due to splay and fatigue after three months of normal use, even though these changes are only visible with a microscope.