[Problem] To provide, in a cosmetic device furnished with a light-irradiating depilatory mechanism configured such that the cosmetic device is equipped with a cooling means for cooling the skin surface, a technology for continuously performing cooling and light irradiation during use and efficiently cooling the cooling means and the light-emitting unit. [Solution] Provided is a cosmetic device (1) furnished with a light-irradiating depilatory mechanism for performing hair removal treatment on a skin surface by irradiating light from a light-emitting unit (15) on the skin surface, the cosmetic device: having a grip section (2) that the user grasps and a skin guiding surface (12) to be brought into contact with the area to be treated while the device is grasped and, in a configuration in which the irradiation window (14) through which light from the light-emitting unit (13) is irradiated and the cooling means (13) for cooling the skin surface are disposed on the same surface on said skin guiding surface (12), being provided with a fan (16) for simultaneously generating an air stream for heat dissipation from the cooling means (13) and an air stream for air-cooling the light-emitting unit (15).[Problème] Linvention vise à concevoir une technologie qui, dans un dispositif cosmétique équipé dun mécanisme dépilation diffuseur de rayonnement lumineux configuré de telle sorte que le dispositif cosmétique comporte un moyen de refroidissement servant à refroidir la surface de la peau, permet deffectuer en continu le refroidissement et la diffusion de rayons lumineux lors de lutilisation, ainsi que de refroidir de manière efficace le moyen de refroidissement et une unité émettrice de lumière. [Solution] Linvention concerne un dispositif cosmétique (1) équipé dun mécanisme dépilation diffuseur de rayonnement lumineux permettant deffectuer un traitement dépilation sur la surface de la peau en diffusant un rayonnement lumineux à partir dune unité émettrice de lumière (15) sur la