A phototherapeutic device includes a sheet member that is attachable to a skin a skin-condition sensor that is disposed in the sheet member and that detects information related to a condition of the skin and a light-emitting device unit that is disposed in the sheet member, the light-emitting device unit operating on the basis of the information detected by the skin-condition sensor. The light-emitting device unit includes a plurality of light-emitting devices that emit light having different wavelengths.
