What is the shelf and use life of the N2O cartridges and how do I purchase them?

• Treatment is more rapid (only 1-5 sec) and more effective than traditional methods
• The Cryoskin is much more precise and relatively painless
• The Cryoskin can be effectively used on both small and large areas
• The Cryoskin’s nitrous oxide cartridges have a virtually unlimited shelf life (no leakage as is characteristic of liquid nitrogen tanks) and are relatively inexpensive
• The Cryoskin is remarkably compact and portable (comparable to a jumbo pen), for easy use in different rooms and facilities