Abstract: A device is described that uniformly cools a surface to a specified temperature using a mist of cryogenic fluid. The device comprises a cryogenic fluid reservoir, a valve for controllably releasing the fluid through an atomizing nozzle, a non-contact temperature sensor, and a control unit to display the measured temperature and optionally pre-set the desired surface temperature and control the valve. The application of mist can be controlled manually or electronically. This invention provides a portable tool for safely cooling skin for dermatological applications.