Will hair dye or bleach help pass a hairfolical?

Hair dye or bleach will not help you pass a hair follicle drug test. These substances do not remove drug metabolites from the hair shaft; instead, they only alter the hair's color. Drug tests typically detect the presence of metabolites that remain in the hair regardless of any chemical treatments applied. Therefore, if drugs have been used, the test is likely to yield a positive result despite any dyeing or bleaching.