Particles having a maximum size of 1-800 nm are obtained from a cell wall component in order to provide novel particles that, when added to a preparation, allow properties such as hardness and collapsibility to be easily controlled.本發明欲提供一種新的粒子,藉由將其添加至製劑可輕易地控制硬度、崩散性等之特性,係從構成細胞壁之成分獲得最大粒徑為1~800nm的粒子。