Patent ID: 8734434

Claim:
A skin cooling method performed as part of a dermatologic treatment procedure using a skin cooling apparatus comprising a skin treatment applicator including an electromagnetic energy exit opening for emission of electromagnetic energy, an air flow ejector adjacent to the electromagnetic energy exit opening including a perimeter wall, the air flow ejector comprising an air duct in flow communication with a distribution system for distributing cooling air, the air flow ejector terminating in a nozzle-like air outlet in the perimeter wall of the light exit opening of the skin treatment applicator, the air duct extending inclined with respect to a direction perpendicular to the light exit opening in the direction of an emission of electromagnetic energy, the method comprising: cooling the skin target region at least during part of an exposure to electromagnetic energy irradiation, the exposure performed for a specified duration by irradiation with electromagnetic energy emitted from an electromagnetic energy exit opening of a skin treatment applicator, wherein the cooling includes an air cooling step comprising ejection of a directional flow of cooling air towards the skin treatment region, said directional cooling air flow having a temperature T in the interval 0° C.<T≦15° C.