Everyone knows Britney Spears cut her hair to avoid a drug test.?

However, would she be able to pass a hair folicle drug test with even an inch of hair?

Was there any other way to get around it? How long does drugs (marijuana, coke, cocaine, herion) stay in your hair?

Couldn't she have just bleached it?
Best answer:
If she recently did any drugs, then yes they could tell from only 1 in of hair. marijuana, coke, and other drugs stay in your hair forever - until you cut off that section. Your hair is like the rings of a tree. Dying your hair will not cover up all drugs, it may just give an inaccurate reading. Most people performing the drug test are only concerned with the hair closest to your scalp because that would show the most recent usage.