Tip Cartridge: 60 treatment cycles Zeno„ is a clinically proven acne clearing device used to treat mild to moderate individual acne pimples. Package contains: One Treatment Tip Cartridge Read the Zeno Product Manual Completely. Replacing the Zeno Treatment Tip Cartridge The Zeno„ Treatment Tip Cartridge is programmed with a specific number of treatment cycles, indicated by the number inscribed onto the top of the cartridge. Once the treatment cycles have been exhausted, the Treatment Tip must be replaced. Designed in the U.S.A.