buddy hair test works this way...




when you smoke weed (its the same for anything else) the hair that has yet to grow out (the root or folicle or whatever its called) is what is going to show signs of drug use, that means that if you smoke 1 day, and then you grow out your hair they can look at the whole strand and the part that was at the root when you smoked will show signs of use, which they can use to estimate about how long its been since youve done anything


if youve done anything in the last week your probably fucked, shaving your head isnt a bad idea if you wanna be careful