ALL detox products are nothing but a big scam to capitalize on the so-called "war on drugs". When they work at all, they "work" because of dilution. That means they work because of the water that youre required by the instructions to drink with them. You can spend up to $200 on a magic elixir and accomplish nothing different than what can be accomplished using just water and vitamin B2.
Claims such as "7-day cleanser", "permanent detox", etc. are all sales pitches designed to prey upon the uninformed and credulous and taking their cash.
There is no product, nothing that can permanently rid the body of THC except for time and fat-burning exercise.