will i pass the hair test ?

[darkangel]

I will have a hair drug test next week, and i havent' been smoking for a month. I saw there's something like shampoo called Clearchoice can eliminate the chemical stuff in ur hair follicle. I ordered two boxes and the instruction goes the effectiveness last up to 8 hrs after using. So the 8 hrs inculding after they cut off my hair and send it to the lab ? Well let me make it clear, if they cut off my hair and keep it for 3 days then send it to lab, will the effectiveness fade? or once the hair is cutted off within 8 hrs after use , i am fine? totally confused. Anyone who ever had a hair test? any suggestion please ?