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How Hair Drug Tests Work and How to Pass Them

A hair drug test is designed to uncover any traces of drugs within the sebaceous follicles in your hair. You may be required to take a hair drug test by your employer, especially if you work in aviation, medical care or defense companies. This is usually to ensure that you’re safe to complete your job without putting yourself or others at risk.

Before sharing with you the tips on how to pass a hair drug test, I’d like to mention that there’s a method known as Mike Macujo method which will help you pass 100% of any drug test and it’s very easy to apply.

The hair follicle drug test is normally used more often than blood tests or urine tests, simply because the traces of drugs can be found for a longer period of time after use in comparison.

Hair follicles can show traces of drugs for up to 3 months after the last time you used them, whereas other drug tests are only designed to show drug usage within the last couple of weeks.

They can detect almost any drug including cannabis, cocaine, and heroin.

How to Pass a Follicle Drug Test

There may be some occasions when you need to ensure you pass a hair drug test with flying colors. Certain occupations require you to have been clean for any type of drug for at least a few months to allow you to operate machinery or see patients. If you fail, this could mean a cut in your pay, or may even mean that you can’t continue to do your job at all.

If you know you need to pass a hair drugs test, there are a few things you’ll need to consider:

1.  Focus on Cleaning Your Blood

Your hair roots are in your scalp, which requires blood flow to keep it healthy. Some drugs, such as cannabis, are detected mostly through the bloodstream, so anything you can do to detoxify your blood is a good idea.

You can do this by simply drinking or eating herbs that have circulatory benefits. These include:

  • Burdock
  • Red Clover
  • Cayenne
  • Chaparral

If you have any issues with your kidneys, it may be best to check with your doctors before continuing,

2.  Shave Your Hair

It’s a hard decision to make but removing the hair will reduce the toxins and mean that you start with a clean slate. You could also try epilation for body hair on the legs.

Remember that long hair is likely to produce a more comprehensive result, so if there are drugs in your system, the toxins will be attached to the proteins in your hair, meaning they can be detected from much longer ago.

Cutting your hair will give you a much greater chance of passing.

3.  Diet Supplements

Some supplements are designed to release histamines which widen your cells and allow any drug toxins to be released more easily, removing them from your body faster.

4.  Use the Right Shampoo

Certain shampoos are great for removing the oils that come from your scalp that are full of toxins. Choose a shampoo such as Zydot or Nexxus around 10 days prior to your test to achieve a clearer result.

5.  Vinegar

Using vinegar in your hair and letting it settle for around 10 minutes before shampooing through will also help to remove the oils.

Which Drugs Do They Test For?

Staying informed of which drugs are evaluated for will also really help you to pass a test. Certain drugs are not pulled up on a test, even if they are detected, simply because that’s not what the lab is looking for. These include inhalants, Mescaline, Peyote, Anabolic Steroids, Hallucinogens, and Hydrocodone.

Anything else will put you at risk of failure, so ensure you stick to something a little safer.

Stay Informed of Test Dates

If you’re interviewing for a new job, a drug test will normally be a prerequisite for being successful. Once you’ve passed the interview stage, they will inform you that a drug test will be required before acceptance. If you’re confident about the job, it’s a good idea to prepare even ahead of the interview date.

Sometimes drug tests aren’t scheduled long after the initial interview, which won’t give you enough time for a detox.


Passing a hair drugs test is essential in certain situations. Obviously, the easiest method to achieve a clear result is to stop taking drugs for 3 months prior to the test if you have that much warning. You should also avoid other people who take drugs, especially if they’re a drug that you smoke, as secondhand smoke can still be detected on a drug test if it was recent. However, if this isn’t possible, following these simple steps will definitely help you out.


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Hi, my name's Craig Malloy. I'm a tec blogger. Well, actually, I'm a computer analyst. Sounds boring, but the background behind it isn't. I work for a firm in South Carolina and in my spare time I like to write about technology. Actually, I like to write posts and publish them on my blog all about technology.

I studied computing at University and have progressed in my technological career ever since.

I hope you enjoy reading my tec and science news stories. Check them out!

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