No, red light therapy (650–670 nm) has not been tested for breaking down fat. Light therapies using other types of light, such as infrared light, near-infrared light, or green light, have shown initial promising results in reducing subcutaneous body fat. However, to the best of our knowledge, the effects of red light therapy on fat are not fully understood. No, red light therapy (650–670 nm) has not been tested for breaking down fat. Light therapies using other types of light, such as infrared light, near-infrared light, or green light, have shown initial promising results in reducing subcutaneous body fat. However, to the best of our knowledge, the effects of red light therapy on fat are not fully understood.