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A member asked:
Can a you change a hair drug test by bleaching your hair? the woman bleached hair to try to change the hair drug test. then colored her hair back to the dark color it was befor she bleached it will that change the test? and can a 7 yr.old test positive in
A doctor has provided 1 answer
No: Bleaching only effects the outside of the hair, and the drugs accumulate within the shaft. There is nothing that washing or other treatments will do that will interfere, to my knowledge, with hair drug testing. You should ask the last part of your question separately, since it got cut off.
Answered 2/10/2014
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