Need input now: The best Shampoo against Hair tests?

[Alfa]

What are SWIY's experiences with shampoo's to get trough a hair drug test?
Which product would you recommend?
SWIM has heard good stories about Zydot Ultra Clean Shampoo:

Ultra Clean Shampoo and Conditioner Internal Hair Purifying Treatment
Removes Medications, Chemical Buildup and Other Impurities From Within the Hair Shaft.
#1 Shampoo: Removes External Barriers to Expose the Inner Hair

#2 Purifier: Penetrates Deep Within the Hairshaft to Dissolve and Remove Impurities

#3 Conditioner: Controls Tangles, Adds Sheen and Improves Manageability
The ONLY complete deep cleaning shampoo with purifying treatments and conditioner.
SHAMPOO away external barriers such as hair spray, styling and finishing products, and everyday buildup to expose the inner hair.

PURIFY by penetrating the hairshaft's inner structure to release, dissolve, and remove the chemicals and medications bonded within the hair. Leave your hair pure and clean, free of all unwanted contaminants and impurities.

CONDITION hair to control tangles, add sheen, and improve manageability.
ZYDOT Ultra Clean Shampoo and Purifier contains Aloe Vera to help condition both the hair and scalp while the penetrating cleansing agents remove impurities. The Aloe based conditioner will leave your hair tangle free and full of body.
To be used ONLY on the day you wish your hair to be clean and free of unwanted impurities

[~lostgurl~]

Not a shampoo but SWIM has heard that this works: bleach swiy's hair peroxide blonde, then dye it back the original colour.

[Myzel]

Swims friend has experienced that bleaching or/and using h202 does not work. When they test for drugs in the hair they are looking deep inside the hair. When using a hair treatment it only works to protect the hair from having the drugs extracted. From what swim understands is that they use chemicals like acetone to extract from the hair. And hair treatments keep the hair resistant against extractions..