How to pass a hair follicle drug test [Case Study]

The most used drug test types are urine, saliva, blood, and hair. We know everything about urine, saliva, and blood drug testing because those tests are fairly easy to pass. But how to pass a hair follicle drug test?

Well, hair strand tests are the most advanced type of drug test and are very difficult to beat. Passing a hair follicle test is much harder than any other drug test. While you can pass a urine drug test with synthetic urine easily (or by swapping the sample), or by masking toxins in your body with a detox drink,  with a hair drug test you can not use any of these tricks.

There is only one way to pass a hair follicle drug test, and that’s to permanently detox your hair. It requires an advanced cleansing method and several specialist detox products, but THC can be removed from your hair within 3-4 days if you do everything properly.

How long does a hair follicle test go back?

This is what makes things tricky, while THC is present in your saliva and blood for a couple of days and a maximum of 30 days in your urine, a hair shaft can store traces of THC along its entire length. So your entire most recent three months drug taking history is indelibly printed into each hair on your body.

If you smoked weed 2-3 months ago, even if it was just one the time, then when you have your hair tested it might show as positive on the test.

So if you have smoked a single joint in the past 90 days and you are now facing a hair follicle drug test, then toxins from that single joint stand a very strong chance of being trapped inside your hair.

How long does a hair follicle test go back

How to pass a hair follicle drug test

There are three options to pass a hair follicle drug test. The first and best method is the Macujo method. The second, which is not such a good option, is the Jerry G method, which is very similar to the Macujo method, but it completely ruins your hair. The third option is to shave your entire hair, but you will have to shave the hair on your head, and everywhere else on your body to stop them from having hair to take a sample from.

Unfortunately, because of how each shaft of hair stores drug usage history by trapping toxins underneath the hard top layer, your options for passing a hair follicle drug test are pretty limited.

As for shaving the hair off your body is a ridiculous idea, it only leaves the Jerry G method and the Macujo method as viable options.

For me, even the Jerry G method is out because I’ve heard so many horror stories about people burning that scalp and destroying the hair follicles, leaving them patchily bald, which only really leaves the macujo method as a safe (but time-consuming and expensive) way of standing a chance of passing a hair drug test.

Shaving your hair to pass a hair drug test

I wouldn’t recommend the third option of shaving your hair, even if it sounds like the easiest option. Let me remind you that those guys in the testing lab are not idiots. They know exactly what’s going on. If you have an upcoming hair drug test and you walk in with a freshly shaved head, they will know what’s going on. They can tell you to come back later with some hair on your head or they can take a urine sample (supervised), saliva sample, or even a blood sample.

It’s also important to mention that hair can be taken from anywhere of your body. It could be very awkward if they start looking for hair on your body. They can take a valid hair sample from the hair on your head, armpits, leg, chest, pubic area, and even from your ass. I would never humiliate myself with this.

passing a hair follicle drug test

The Jerry G method

The Jerry G method has mixed reviews. Some people passed using it, some didn’t. I wouldn’t recommend it, because it requires stuff like bleach, baking soda, and other chemicals. It completely ruins your hair because you have to bleach it up to 10 times until your hair can become completely damaged so it won’t contain traces of THC or any other drug.

This method is quite cheap though, which is why it’s used by some people who do not care about their hair and scalp. If that’s you, then you could give it a shot, but again, it can cause permanent damage in your hair, not to mention the scalp irritation, so is it worth it when there is an alternative that doesn’t?

Macujo method for the hair test

The Macujo method is the most advanced method to pass a hair drug test. But be prepared to spend some time on this, because it does need to be done a lot of times over several days.

The Macujo method also requires quite a long list of specialist ingredients to make it work, and all of these are essential:

  • Aloe Rid detox shampoo
  • Zydot Ultra clean detox shampoo
  • Clean And Clear Pink shampoo
  • White vinegar
  • Tide liquid detergent

how to pass a hair drug test

But the great news is that this method really can help you to get rid of THC from your hair follicles within a few days.

You need to wash your hair 2-3x a day, and try and do this as many times as you can. But washing it 10 times should be enough. Let’s say your test in on Friday, then start your hair detox treatment on Monday, wash your hair 2-3x every day, and you will be clean by Monday.

What makes this method unpopular is the cost. Aloe Rid (old formula) with Zydot Ultra clean detox shampoo bought as a combo costs $235. All the ingredients together cost around $250, which is a lot of money for detox products, but if it helps you to pass the test then why not?

One of the biggest problems you might encounter is finding old style Aloe Toxin Rid shampoo. Please don’t fall for the trick of buying it on Amazon or eBay, where people claim it’s the original stuff. But it’s not ever going to be the original Aloe rid, because that was discontinued years ago and all were sold.

But you can buy Aloe rid from Test Clear. It’s the original formula that has been recreated. It works in exactly the same way and has exactly the same active ingredient. But it is going to cost you a lot of money.

Briefly, the steps you need to take each time you do the Macujo method are as follows:

  1. Wet your hair and then apply vinegar to it thoroughly. This will sting, and will probably want to wear goggles and gloves to do it.
  2. With the vinegar still in your wet hair, work in a generous helping of Clean and Clear pink shampoo. This will make it sting even more, but don’t worry it’s not damaging your scalp or hair. Then wrap your hair in cling film and leave it for 30 minutes.
  3. Rinse your hair out thoroughly with warm water, then wash it with Aloe Toxin Rid. Rinse it out with warm water, then repeat the process.
  4. The final step is to apply a small amount of liquid detergent to your freshly washed and wet hair. Work it in until your hair has a “squeaky” clean feeling. Then rinse that out as well.
  5. After repeating the Macujo method as many times you can in the lead up to your drug test, on the day of your test, about an hour before you leave, wash it with Zydot Ultra Clean. If you are doing the Macujo method one final time on the morning of your test, and just use it straight after.

macujo method review

The Macujo method does work

So those are the basic steps to use the Macujo method to pass a hair follicle drug test. It’s powerful, but an invasive method that is suitable for any type of hair.

So whether you are male, female, if you have dreadlocks (I have a friend who is a Rasta and they passed a drug test using this method), it really doesn’t matter. But you must do the Macujo method as many times per day as you can, over as many days as possible.

My last piece of advice is to make sure that you have all the items you need in stock in advance. They can take a few days, and time is of the essence when you need to do this method as many times you can in the lead up to your drug test day.


I just wanted to add a bit at the end here to tell you guys that I passed a drug test using the Macujo method recently, so it really does work.

It was for an internal promotion, and as it was rounds of interviews and several promotions, I knew in advance through other people that they were going to do hair follicle drug test. Which meant I had a few days advance warning, which was just so lucky.

I did the Macujo method six times, over four days, the first time we got home after finding out, three times next day, two times the day after that. On the morning of the test I did it one final time, for a total of seven wash-throughs.

We were all tested at Concerta, and two of the other candidates failed and didn’t get internal promotion positions. I passed, and I got mine. A couple of the guys who I know well were astonished because they know I smoke weed a lot. I just told them I hadn’t been doing it as much recently and just got lucky. I don’t like giving secrets like that way to just anyone.