Will yogi detox tea harm me, or possibly cleanse me a little bit? are there any health benefits to herbal detox tea or is it dangerous or a waste?

Waste of time: There is no clinical evidence that "cleansing" has any medical benefit. Although, generally not harmful, herbal medicines can contain high levels of dangerous materials or adversely contain almost nothing at all. The thought of cleansing comes from the notion that stool is dirty. However, your colon doesn't absorb anything but water and "toxins" cannot be absorbed. Short answer: A waste of time.