This cosmetic device is provided with: a handle (10) a pair of balls (13A, 13B) which are formed from isotropic high-density graphite, and which are supported on the handle (10) and a heater (131) which heats ball (13A) to a temperature equal to or greater than a preset reference temperature. Furthermore, the cosmetic device is further provided with: a battery (111) and a heater drive circuit which receives a power supply from the battery (111) and drives the heater (131). Moreover, the heater (131) is formed from a positive temperature coefficient (PTC) thermistor.
