The device has an irradiation lamp for irradiation of human skin with radiation in a red light range. The lamp is designed as a high-pressure or highest-pressure gas discharge lamp. A filter device filters radiation emitted by the lamp. The filter device filters the radiation of the lamp in a wavelength range of less than 550 nanometer, where radiation power of the filtered radiation of the lamp measured at a distance of more than 30 cm from the lamp is greater than 450 watt per square meter. The device is designed as a tunnel device or solar/radiation bank. Filling gas of the irradiation lamp comprises mercury, xenon, sodium iodide and/or scandium iodide.
