Detox potions are a scam. They work on the principle of dilution - meaning that they "work" because of the amount of water you have to drink with them. The product itself does nothing. Why spend large sums of money on an overpriced diluter when you can accomplish the same thing by following the Dilution sticky thread, which is brought to you in this forum for FREE?

Drinking tons of water days before the test is of no help. It may make you urinate frequently, but the rate in which THCA is filtered in from the bloodstream by the kidneys remains unaffected.
The idea of drinking fluids is to dilute the concentration of THCA thats present in the bladder at a given time - not too much to where the sample gets flagged for being overdilute, but rather just enough to where the sample registers below the cutoff limit of the drug screen. Its a balancing act and the actions are only temporary. Once all of the fluids consumed had been urinated out, that person will resume testing positive for THC. Therefore, drinking fluids is only helpful on the day of the U/A.

Sweating doesnt help because very little THC is excreted thru sweat. The rest of it is being excreted thru the urine and feces.