Is detox cleansing powder from health food store worth the money?

IMO, NO. Obsession with digestive cleanliness is a boon to manufacturers of detox powders, potions and devices. But just what is it you want to cleanse from your system? Toxins? As long as you don't overload it, your body is a self cleansing system from your liver and kidneys to your skin (though an occasional sauna can unblock pores and improve your inherent cleansing ability). There are exceptions.