Guide: How To Pass A Hair Follicle Drug Test Step by Step

One of the hardest drug tests to pass is the hair follicle drug test. It's because traces of drugs stay in your hair for up to 90 days, and it provides accurate results. So, if you are applying for a job or already employed, and your boss surprised you with a drug test, they usually use a hair follicle drug test. This post focuses on how can you beat a hair follicle drug test.

A hair follicle drug test does not require a confirmatory test, unlike the urine drug test. Because of this, several companies and federal government departments prefer hair follicle drug tests over pee drug tests.

But do not freak out, as some products and methods can help you pass a hair drug test in 24 hours (1 day). In this article, we will talk about the most effective ways and the best product to use to help you pass the hair follicle drug test.

What is A Hair Drug Test?

A hair follicle drug test determines if a person has taken drugs for the past 90 days. Although the substance can be detected in the urine, hair follicle testing is suggested to detect long-term usage of drugs. The hair follicle drug test detection times are the longest compared to urine and saliva.

Many companies and government agencies prefer the hair drug test over the urine test because it provides accurate results. In addition, the hair drug test is non-invasive and is pretty hard to cheat on.

How Does the Hair Drug Test Work?

Obviously, this test uses a hair sample taken from the hair's root and subjected to testing to determine drug use. Every time a person uses drugs, it is absorbed in the bloodstream. The drugs are transported into different parts of the body, and since the hair follicle has a blood vessel, the substance is also carried into it. Thus, traces of drugs are detected in the hair follicle.

What Can A Hair Drug Test Detect?

The hair drug test can be used to detect a specific drug. But laboratories can also test a single hair sample for different substances like:

  • Marijuana
  • Cocaine
  • Phencyclidine (PCP)
  • Amphetamines that include MDMA (ecstasy), MDEA (eve), and methamphetamine
  • Opiates like codeine, morphine, and heroin

The Testing Process and its Main Principle

Below is the explanation of the testing process and the main principle to understand how it works.

The Process

Laboratory personnel will collect 100 grams of hair or around 90 to 120 strands. The hair will be taken from different locations to make sure there will be no bald areas. After collecting the hair samples, the collector will wrap in an envelope or foil, seal and label them.

The samples will be brought to the lab and subjected to ELISA (Enzyme-Linked Immunosorbent Assay) test. It is a rapid screening process. Positive samples will be re-tested using a chromatography-mass spectrophotometry test for confirmation and rule false positives, which is quite common on prescription opioid painkillers.

The Main Principle

The drug's by-products are spread into different organs, just like everything else you consume in your body. The drug's metabolites bind to the cells and tissue around the hair roots. They reach the hair follicle and flow on the strands, where they stay there for three months.

How Can You Beat a Hair Follicle Drug Test?

Although the hair follicle drug test is very accurate and known for its ability to provide evidence, you can still beat this substance test. If you know that you will have a follicle test soon, it is best to stop using cannabis. You should also stay away and avoid skin-to-skin contact with the person who has taken cannabis. Below are three effective ways to beat hair follicle drug tests.

Using Detox Shampoo

Detoxing the hair is one of the recommended methods to beat hair follicle drug tests. Detox shampoo penetrates deep into your hair follicles and scalp to eliminate drug toxins. If you search online for the best detox shampoo, Old Style Aloe Rid Shampoo will appear on the top list.

Old Style Aloe Rid Shampoo

It is the best hair detox shampoo to pass a hair follicle drug test on the market. The product is a proprietary combination of chemicals that can eliminate drug metabolites like THC from your hair.

This product has been used for several years and has been proven effective. Old Style Aloe Rid Shampoo is a thick gel that is easy to apply and flows slowly in your hair. It has a bright green color but fades when lathered.

Once applied to wet hair, the shampoo lathers densely. The richer the lather, the faster it will remove the contaminants and the more effective. No need to thoroughly work the shampoo into the hair ends. Only three inches closest to the scalp are needed to be tested.

Old Style Aloe Rid hair follicle drug testing shampoo has a light sweet scent that is not harmful in any way. The shampoo is recommended for men and women. Using detox shampoo is easy. First, shampoo your hair as if you are using a regular shampoo. Then rinse. After rinsing, gently massage Old Style Aloe Rid into your hair follicles. Let it stay in your hair for 15-20 minutes before rinsing. Use it every day for 3 to 10 days or until the day of your hair follicle test for the best result.

Home Remedies

Two of the best method to beat hair follicle test is by applying the Macujo or Jerry G Method. These two methods are known to be very effective in helping you pass the hair toxicology test.

The Macujo Method

The Macujo Method is an effective method that will help you pass the hair follicle test and can be done in one day. It may damage your hair, but that is precisely how it works—the more you damage your hair, the fewer drug metabolites. If you use this method, make sure you are ready for the outcome of your hair.

What do you need?

  • Salicylic acid-based shampoo - to flush out the substance present in your hair.
  • Vinegar with a good amount of acetic acid
  • Old Style Aloe Rid Detox Shampoo – make sure it's the original one.
  • Zydot Ultra Clean is a vital component of the Macujo Method.
  • Protective gear – rubber gloves to protect your hands from hazardous chemicals
  • Shower cap

Step by Step Procedure of The Macujo Method

  • Use slightly warm water to dampen your hair. Then apply vinegar to your hair and scalp. Make sure every hair strand is covered with vinegar. It may smell bad, but it will not damage your hair.
  • Shampoo your hair using salicylic shampoo. Make sure all the hair strands are covered with shampoo.
  • Use a shower cap to cover your head, and let the vinegar and the shampoo stay for 30 minutes, and work into your hair follicles and scalp.
  • After 30 minutes, rinse your hair with warm water.
  • Use Aloe Rid again to shampoo your hair. Let the shampoo work in your scalp and hair as you massage it for several minutes. Then rinse it twice.
  • The last step is to use a small amount of Tide detergent to wash your hair. Wash your hair thoroughly until it becomes nice and squeaky clean.
  • Before the time of your hair follicle test, wash your hair using Zydot Ultra Clean shampoo. This will make sure that all the toxins are removed.

Do the process three times a day before the test, and then repeat it once more the morning of the test day.

Jerry G Method

The Jerry G Method is also an effective process of removing the toxins in your hair and clearing it from traces of drugs. This process was developed to break down the cuticle and removed any remaining metabolites in the cortex.

What do you need?

  • Ammonia-based hair dye – make sure it matches your hair color.
  • Bleach
  • A detox shampoo – Old Style Toxin Shampoo is recommended along with Zydot Ultra Clean
  • Baking soda melted in water until it achieved a paste-like consistency
  • Set of new combs- You need to discard your old combs as they might recontaminate your hair and scalp.

Step by Step Procedure of The Jerry G Method

  • Stop using marijuana or any drugs ten days before the hair follicle drug tests. On the first day, you stop using the substance, bleach your hair, and use an ammonia-based hair dye to restore your hair's original color.
  • Once you are done with bleaching and dyeing, use a detox shampoo to wash your hair thoroughly. Do not use a hairdryer. As much as possible, minimize hair damage.
  • After ten days, repeat the process. Bleach, dye, and wash using a detox shampoo.
  • Spread the baking soda paste in your hair a few hours before the hair drug test. Let it sit for 10 to 15 minutes. Then, use detox shampoo to wash off the paste, and you are ready to take the test.

Abstain From Using Weed

Abstaining from weed for more than 120 days can help you pass the hair follicle test. The best way to detox from marijuana is to stop using it. The detoxification process will not be completed until you stop using it. Abstaining from using the weed longer than 120 days is the best way to quit for good.

What Happens During The Hair Drug Test?

The tests are conducted in a lab or a hospital. Some companies use testing kits and send them to a laboratory. You can also order online home hair follicle tests. If the company you are working with requires you to take the test, they will ask someone to supervise it.

You can dye, wash, and use styling products in your hair without impacting the test results. The lab personnel will cut around 100 to 120 hair strands in different parts of your scalp. If you have little or no hair on your head, they might use body hair like in your armpit or legs. Then, the collector will send them to the lab where the testing is conducted. You will get the result within three to five days.

How NOT To Pass Hair Follicle Drug Test?

You might have used several quick solutions to ensure your hair follicle is free from any drug traces. But there are lots of half-truths, blatant lies, and myths. So be very careful. Below are some of the methods that are not as effective as using detox shampoo.


Many think that if they are bald, the hair follicle test is not possible for them. Sad to say, the collector may take hair from any part of your body. So, you might be thinking of shaving all your hair. However, doing this can make them more suspicious, and they might redo the test once your hair grows.


According to a study conducted in 2000, bleaching hair can reduce the percentage of drug metabolites in the hair. But this is not proven. Based on studies, it is only 40% effective. You don't want to ruin your reputation or lose your dream job because you failed the hair follicle test.

Short-term Abstinence

Abstaining from cannabis or other drugs can help you pass the test. But you need to do it for longer than 90 days. If not, you might fail the test.

Lice-Treatment Shampoo

This type of shampoo contains pyrethrum or pyrethrins extracts together with piperonyl butoxide. These are insecticides, but no studies support some people's claim that it effectively detoxifies your hair.

Which Employers Use Hair Drug Tests?

Many companies are using hair samples to test for drugs. Some of the companies using the hair drug tests are as follows:

  • Trucking companies
  • Food industries
  • Oil and gas companies
  • Gaming industry
  • Financial industries
  • Auto manufacturing

These companies know that it will cost them a considerable amount of money if they are caught having an employee positive on drug testing. The best thing about hair follicle drug tests is that it is hard for the employee or applicant to cheat.

When You Need to Pass a Hair Drug Test? (CPS/Child Protective Services)

CPS or Child Protective Services is a branch of the US Social Services Department that overlooks the protection of children against mental and physical abuse. They function under various names in America.

Many parents are scared when they are asked to take the hair follicle test. They are afraid of it because it is sensitive and unpredictable. The test results decide the fate of the parents to take them into custody or leave the child. If you have tested positive on drug tests, you might lose your children. So, it's a must for you to pass the drug test.

FAQs About Hair Detox Shampoo

  • How long does marijuana stay in your hair follicles?

Usually, THC and weed stay in your hair follicles for up to ninety days and three days to a month or even longer in the urine, 36 hours in the blood, and 48 hours in saliva. Therefore, using marijuana regularly could result in dependence and withdrawal.

  • Can the hair follicle test be done on anyone with less or no hair at all?

Yes, it is possible. The collector can get hair not only in your head but also on your armpit or legs. But you cannot combine body hair from head hair.

  • How long will you wait for the result?

If you are negative, you will know it on the same day. But, if you test positive for a drug, you will have to wait for three more days as it requires a confirmation test. The confirmation test is needed to rule out false positives. Many may get positive results but sometimes get a negative result on the confirmation test.


We hope this how to pass a hair follicle drug test article cleared all your doubts and worry about the drug test and the different detox methods.

The majority of the detox programs are intended for urine tests. If you follow the instructions correctly, the detox drinks may work at the 11th hour. But there is nothing you can do overnight to pass the hair follicle test.

It is hard to get rid of the THC metabolites and other drug traces once embedded in your hair follicle. Then you have no other options but to wait for your hair to grow out. For light users, the hair detox shampoo works to some extent.

If you want to pass the hair follicle test, the best thing to do is follow a healthy detox routine regularly, drink lots of fluids, and thoroughly wash your hair to keep your body detoxified. So a surprise hair follicle drug test may not be as dreadful as before.

If you want to share your thoughts about how can you beat a hair follicle drug test or have some questions in mind, feel free to write them in the comment section.

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