Advice: how worried should I be?

[Rockie2014]

I quit smoking 6 months ago. I smoked a little every day. In the next month or so I have a follicle test coming up that I absolutely cannot fail. How concerned should I be?
I'm a female so my hair is longer, should I cut it shorter to get rid of the old dirty hair or is it extremely unlikely that they will test that far down?
Would detox and bleaching be enough?

 

[1ne eye]

I think you will be o.k at 6+ months, never had a hair test but my guess they would take it closer to the root. Good luck,hoping you pass.