Ключевые слова: background, bactericidal, bathroom, body, care, diseases, domestic, effect, effective, energy, enjoy, future, health, healthy, heat, heating, immune, improving, infrared, lamp, light, lighting, luxury, modern, needs, object, produce, relax, relaxation, shower, showering, skin, solarium, spectrum, system, taking, temperature, treatment, ultraviolet, uv, vital, warming, wellness,