Yes.
all the way
Your hair expels everything that goes in your body, all of your hair.
atleast 6 months to a year
No, washing the hair will not remove alcohol metabolites from inside the hair shaft for a follicle test. This type of test is designed to detect substances stored in the hair shaft, so the presence of alcohol would likely still be detected.
Yes - as getting a perm will do little to change the contents of the inner hair shaft and follicle.
A hair follicle test can be used to identify specific drugs used by the person being tested. The test can usually detect drug usage over a longer period of time.
If the machine they test your hair sample on is running a benzodiazepine profile they can definitely do a hair test for valium.
Follicle.
the hair follicle is a skin organ that produces hair.
No, not really as it can detect up to 90 days, maybe longer depending on how often you use, also hair growth.
No, hair test detect drug usage : 36h after - up to 90 days.
drugs and there metabolites that show it passed through the body.