Philips sonicare for kids toothbrushes and brush heads suit the needs of children as their mouths grow the 4 brush head is targeted towards children aged four years and older the brush heads have been specifically designed to meet the special needs of children and have a rubberised mould to protect young and growing teeth against potential chatter and the bristles are a clear colour to denote the gentleness that the toothbrush deliversthese scientifically proven brush heads are desig