For effective red light therapy, position yourself 15 to 50 cm away from the light source. The duration of each session should be between 10 to 20 minutes. The closer the light source is to your body, the more intense the irradiation power, which can shorten the required treatment time. Conversely, increasing the distance will reduce the irradiation power but cover a larger area, necessitating longer sessions. Adjust the distance based on the area being treated and your individual response to the therapy.