The only "effect" those magic "detox" elixirs had on a tests outcome is that they (along with the copius amounts of water consumed with them) dilute the THCA concentration that is present in the bladder enough (however temporary) for the sample to register a negative. The same thing can be accomplished with just the water consumption alone.

There is no product that can permanently rid the body of THC, as the sales pitches would like the consumer to believe. The only proven way to rid the body of THC is time and exercise.