Detoxification is much more then taking a supplement that makes you go to the washroom more frequently.
There are over 75,000 different man made chemicals that are allowed to be used and released into the environment every year with ~ 1,500 - 2,000 new chemicals made every year. Most of these chemicals have never been tested for toxicity and with only ~10% studied for their effects on humans.
When your body is exposed to a foreign chemical through drinking water, eating food, breathing, or absorption through the skin, its main goal is to get ride of it as easily as possible. Your main organs of elimination are liver, kidneys, lungs, skin, and lymphatic system. All need to be preforming properly to effectively keep your body clean.
Increased toxin build up is related to a number of chronic diseases including cancer, asthma, inflammation, heart disease, fibromyalgia, and autism.