What is inside the starter kit? January 21, 2020 19:10 Updated Follow The starter kit is composed of a Willo device, 1 mouthpiece and 2 cartridges of Willo toothpaste. Related articles Willo doesn't fit on the countertop of my bathroom, what can I do? Can I replace the hose and/or the handpiece of Willo? How does Willo adapt to each user? How do I update my payment method? Is your device patented?