A phototherapy device for applying light from a plurality of low-level light sources, such as LEDs or laser diodes, to male genitalia. The plurality of light sources are located on the interior of a tube, cup or helical band or ribbon, which is then applied to some or all portions of the male genitalia. One or more straps or arms may be used to position the device and hold it in place. A control unit may be wired or wirelessly connected to the device to power and control the frequency and timing of the light therapy application.