An optical output device for skin care, according to an embodiment of the present disclosure, comprises: a substrate disposed such that at least one light source is oriented toward a user's skin； a front cover covering one surface of the substrate； a rear cover covering the other surface of the substrate； a wearing device coupled to the rear cover so as to make contact with a part of the user's body such that the optical output device for skin care is worn by the user； and a wearing detection sensor for detecting whether the user is wearing the device.
