I find this very pleasant toothpaste and I'll continue to use it with my MEGASONEX M8. It reaches a relatively small amount that I apply to the tooth front sides before switching on the toothbrush. The tongue is relatively little with the concentrated toothpaste in touch, so it is not me too sharp. When quadrant point brushing the toothpaste is then fully distributed and foamed on lush. The cleaning result is perfect and mouthfeel mintig fresh .. the breath as well. I can not say anything about the effects over a long period, but a lightening of tooth discoloration seems to be promised too much. I would recommend the toothpaste.