Medical point of view?
Your body has kidneys, a liver, intestines, a lymphatic system, an immune system - in fact, inside your body is the most sophisticated detoxification system possible. There is NO NEED and absolutely NO medical basis for "detox" products. It is all a scam to make you spend money. That's it, pure and simple.
Your body already removes "toxins" for you. If your liver and kidneys aren't working, then one of these detox products won't help you - you'll need transplant surgery.
I try not to get to preachy on here but lately I'm getting frustrated with all the "detox" stuff I see around. Not necessary! And can be dangerous, as are any extremely low calorie diets - surviving on purely fruit, or purely cabbage soup, or whatever else you try, is NOT healthy. And no, a multivitamin does NOT replace a balanced diet!