Are there methods on how to pass a hair follicle drug test.
Shave your head. Say you got in an accident on the forth of July that burned all your hair off. Other than that, nope. Unlike urine or blood test , hair testing tend to me more thorough and can show about everything you did and when up to the time you got it last cut, least if I recall correctly. Think of it kind of like the rings of a tree, the rings are just vertical vs horizontal. Best of luck.
There are some methods that work but the only fool-proof way is to shave off all your hair, including body hair.
The position your applying for must be very selective?
There isn't a way besides not doing them