Hair Test HELP!!!

I have a hair test on Dec. 21. I have taken 3 hits of mid grade bud since Sept 29. The latest hit being two weeks ago from the date of my hair test. I have too short of hair on my head for testing...so it will likely be a body hair test. Do you think I'll pass? And if not, what is the most effective shampoo/wash to clean my hair?

Ive answered these questions many times in the last couple of weeks. Do an advanced search on the topic hair testing in the drug testing forum under my user name and you'll find the answers.