10 days of hair growth would be enough time to shave. 3-4 days to let the thc stop depositing and roughly a week to get new clean growth away from the scalp. Now this is exceptable for head hair, but body hair doesn't grow quite as fast. What you really need to figure out is where you want them to take the sample from. If I were in your shoes I would let my head hair grow out because its going to grow faster and given your time frame you may be pushing it to get 3\4 of an inch of growth.
Deige Reviewed by Deige on . Questions about hair testing. I rarely smoke, last time before the 5th of Dec was over 6 months ago. While on vacation I took 2 hits from a joint. Prior to vacation the place I was thinking about applying at was not hiring, when I got back from vacation I found out that they are getting ready to hire for possibly the next several months. About ten yrs ago I worked at this place as a student and passed the hair test because I stayed clean for 90days. I just hate to wait 90days to put in a resume now, which would be Rating: 5