designer's own words:When people brush their teeth, the toothpaste squeezed on the toothbrush always doesn’t used up, meanwhile, actually, the abrasion part of a toothbrush is its brushings, so discarding the whole toothbrush makes great waste. As toothpaste is to provide cleansing and friction, why not combine the toothpaste and brushings together? Pastebrush is such a new toothbrush of this concept. The material of Pastebrush’s head and brushings contains the ingredient of toothpaste. During brushing, the friction between teeth and brushings results in foam and cleaning composition, with gradual consumption, the brushings get shorter till disappear. When it exhausts, we only need to replace a new brush head onto the former handle for continue use, without abandoning the whole toothbrush. It not only keeps toothbrush head clean, but also reduce unnecessary waste.