To provide A dehairing unit which can securely prevent a burn in continuous dehairing.

A cooling mechanism 30 is for cooling air supplied from a blower mechanism 20 such as a fan, etc., for supplying pressurized air, and the inside is equipped with a heat transfer member 32 with a passage 31 capable of passing air supplied from the blower mechanism 20, three Peltier elements 33 for cooling the heat transfer member 32, and a radiating mechanism 34 to radiate heat generated by the Peltier elements 33 by cooling the heat transfer mechanism 32. The air cooled down to about 15-10° of frost is blown against an area dehaired by a laser beam.