Blood in the human body performs many functions, such as transporting oxygen, hormones, clotting factors, glucose, fats, and even immune cells. You don't need to invest in expensive diet plans or buy supplements to cleanse your blood because your liver and kidneys are already doing that important job for you. The best way to naturally detox your blood is to support your essential organs in functioning as efficiently as possible. You can also use natural herbs to enhance the function of these organs.