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How to Pass a Hair Drug Test?

A urine test can detect illicit drug use over a few days duration, however, a hair drug test detects the presence of drug use for up to 90 days. This makes the question of how to pass a hair drug test an important one to answer. The significance of this kind of drug testing, to detect weed (THC) usage, is found in the answer “How long does weed stay in a hair follicle?” Compared to other drug test types, hair follicle drug testing offers a longer detection window.

The article provides valuable insights into passing a hair drug test, including details on drug detection, weed elimination timeframes, and the use of hair detox shampoos like Old Style Aloe Toxin Rid and Zydot Ultra Clean. It also delves into the procedures and turnaround times associated with hair follicle drug tests.


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  • Is the main part Of The Macujo Method!
  • Is the main part Of The Jerry G Method!
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Zydot Ultra Clean Shampoo

  • Shampoo and Conditioner. Internal Hair Purifying Treatment that removes medications, chemical buildup and other impurities from within the hair shaft.
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How Long Is Marijuana Detected In Hair Follicle Drug Test?

Follicle drug testing though commonly called hair follicle test, is a misnomer as it does not test the follicle beneath the scalp, it tests clipped strands of hair. Marijuana’s active chemical can stay in the hair follicle for up to 90 days or more. This makes the hair follicle test a sensitive test. Of all the drugs, cannabis remains the most common, with an estimated 125–227 million users globally.

Some of the other drugs that can be screened for include:

  • Cocaine
  • PCP
  • Opiates
  • Expanded
  • Opiates
  • Oxycodone
  • Amphetamines
  • Methamphetamines
  • Barbiturates
  • Benzodiazepines
  • Methadone
  • Meperidine
  • Tramadol

One uses a 12-panel hair follicle drug test for this. It is a thorough drug panel that is frequently requested. It is commonly ordered for court cases such as divorce and child custody and is more costly. For all substances, hair testing’s specificity at conventional laboratory cut-offs surpassed 90%; however, its sensitivity in comparison to self-report was poor, recognizing just 52.3% of cases.

Although the 12-panel Hair Follicle Drug Test, it’s vital to remember that this panel can identify a wider variety of chemicals. This is so because many of these substances are members of the same class (for example, heroin, codeine, and morphine are all forms of opiates). In preparing for a 12-panel hair follicle drug test, individuals may consider using specialized shampoos such as Old Style Aloe Toxin Rid and Zydot Ultra Clean to potentially help remove traces of substances from their hair.

How To Pass A Hair Drug Test

Cutoff Levels for Drug-Tested Substances

The cutoff levels for the most common hair follicle drug-tested substances are shown below:

Drug Screen Cutoff Level Confirmation Cutoff Level
Marijuana 1pg/mg 0.1pg/mg
Amphetemines/Methamphetamines 300pg/mg 300pg/mg
Opiates 500pg/mg 500pg/mg
PCP (Phencyclidine) 300pg/mg 300pg/mg
Cocaine 300pg/mg 300pg/mg

Hair Follicle Drug Test Procedures

Different categories of people may require a drug test, whether for pre-employment screening, court orders, or military exercises. To prepare for such tests, individuals may turn to specialized products like Old Style Aloe Toxin Rid and Zydot Ultra Clean shampoos, which are designed to help remove drug residues from hair samples.

Testing Algorithm

  • Multiple spots on the head close to the scalp are collected for hair strands. From the armpit and skin, hair can be collected when there is little to no hair on the head.
  • The hair was sent to the lab. Report the use of any prescription medications so it can be noted.
  • At the lab, the hair sample undergoes 2 steps of testing. The first step is a rapid screening method which is an enzyme-linked immunosorbent assay (ELISA) test.
  • If a particular substance produces a positive result in the initial step, we subject the hair sample to retesting with confirmatory chromatographic methods to rule out false positives.
  • Results are sent out within 3-5 working days

Will I pass a hair drug test if I smoked once?

Although hair follicle drug testing is fairly accurate and largely acceptable by the court and other respectable organizations, because of its various advantages the answer to the question might cast a shadow of doubt on the results it provides. This drug test requires heavy or chronic use for detection.


Aloe Toxin Rid Shampoo + Zydot Ultra Clean

  • Is the main part Of The Macujo Method!
  • Is the main part Of The Jerry G Method!
See Deal →

Zydot Ultra Clean Shampoo

  • Shampoo and Conditioner. Internal Hair Purifying Treatment that removes medications, chemical buildup and other impurities from within the hair shaft.
See Deal →

Interpreting Drug Test Results

The test is conducted in two stages: 

  1. The initial rapid screening using immunoassays to reveal the presence of a drug or drug class when its presence is detected and in amounts that exceed the given cut-off mark.
  2. The chromatographic confirmatory testing uses gas (GC-MS) or liquid chromatography to rule out false positives. This quantifies the drug and its metabolites.

Laboratories can report results from hair tests for THC and other drugs as positive or negative:

  • Negative: A negative result indicates that no drug metabolites were found in the hair sample, or that the laboratory was unable to confirm the results with GC-MS following a positive ELISA screening.
  • Positive: When GC-MS testing is performed on hair samples that have tested positive in ELISA, the results are further analyzed. When confirmatory testing yields a positive result, it indicates that the laboratory verified the existence of particular drug metabolites in the subject’s hair sample.

Inconclusive results can be reported as a third class. If testing procedures are not followed correctly or if the hair sample is contaminated, the result may be declared inconclusive by the laboratory. When using home hair drug testing kits, it is important to confirm if the company does the confirmatory chromatographic testing. It is not possible to conclude the hair drug test without it. Moreover, individuals may explore supplementary methods like the Old Style Aloe Toxin Rid and Zydot Ultra Clean shampoos for additional assurance in eliminating drug residues from the hair strands.

Factors Influencing Toxin Retention

  1. Body Mass Index: People with more body fat retain THC longer, those with lower BMI have a reduced ability to “store” THC in their bodies
  2. Gender: Cannabis metabolizes slowly in females because of larger body fat than males, and remains detectable for longer.
  3. Genetics:  People with stronger metabolisms, can eliminate cannabis from their system more quickly.
  4. Frequency of use: Generally speaking, infrequent users may “clear” the THC from their bodies more quickly than chronic users.
  5. Mode of drug use: Ingested weed is also believed to remain in your system longer than smoking does.

Pre-Test Preparations: What to Avoid

When preparing for a hair drug test, there are some things to avoid, as THC can enter hair strands in a few different ways.

  • Intake: After intake of this cannabis, it diffuses into the bloodstream and breaks down into its metabolite (THC). The hair follicle deposits the drug, trapping these molecules in the hair shaft.
  • Contact: Physical contact can also cause it to enter the hair, your hair may test positive if you have touched marijuana or even if someone else who has handled marijuana touches it.
  • Weight loss pills: A prescription medication called phentermine helps reduce appetite. If you are not taking amphetamines for a medicinal purpose, phentermine may cause a false positive on your drug screen.
  • Poppy seeds: Morphine and codeine are naturally present in these tiny black seeds.
  • Mouthwash: A common ingredient in mouth rinses is ethanol, which is a type of simple grain alcohol, creating a false positive.
  • Antidepressants:  Sertraline (Zoloft) is used to treat depression, panic attacks, OCD, and other conditions. Certain drug screenings might not be able to distinguish between benzodiazepines and sertraline.
  • CBD oil: CBD is used in medical marijuana to reduce pain and other symptoms. This can also create a false positive test result.

Other things to avoid include antihistamines, antibiotics, HIV medications, and more.

Strategies to Pass Hair Strand Drug Tests

There are a few strategies to look out for while trying to pass a hair drug test. Here are two common methods:

The Macujo Method

Ingredients required

Rubber gloves, vinegar, tide liquid detergent, salicylic acid, bathing caps, Old Style Aloe Toxin Rid, Zydot Ultra Clean, and eye goggles.


  • Thoroughly saturate your hair with lukewarm water.
  • While wearing protective gloves, liberally apply vinegar to your damp hair, making sure it penetrates the scalp.
  • With the vinegar still applied, massage Clean & Clear Deep Cleansing into your hair, ensuring complete coverage.
  • Tightly wrap your hair in plastic wrap to allow the products to penetrate, and let sit for approximately 45 minutes.
  • Thoroughly rinse the solution from your hair using sufficient warm water until your hair is free of residue.
  • Apply a generous amount of Old Style Aloe Toxin Rid Shampoo or Zydot detoxifying shampoo, working it through each strand with your fingertips.
  • Allow the shampoo to remain on your hair for around 5 minutes before washing your hair and scalp thoroughly with Tide Liquid Detergent.

The Jerry G Method

An alternative approach to the Macujo technique involves applying Old Style Aloe Toxin Rid after 2 episodes of bleaching and drying the hair.

Ingredients required

2 containers of dye and bleach (matching your hair color), Old Style Aloe Toxin Rid shampoo, baking soda, Zydot


  • Use dye and bleach according to the manufacturer’s instructions to avoid damage.
  • Apply Old Style Aloe Toxin Rid shampoo
  • Repeat the above steps in 10 days
  • Lighten your hair with bleach, dye it, and wash it thoroughly
  • Prepare a paste of baking soda and water to apply to the hair. Leave it on for 15 minutes before rinsing off.
  • Apply the Zydot shampoo for better results

The major drawback is that it relies on ammonia-based dye and bleach, which damages the hair.

Best Hair Detox Shampoo for Drug Test

Hair detoxification is an important process for a successful hair drug test. Here are some highly effective hair detox products suitable for your drug test:

Old Style Aloe Toxin Rid

The original goal did not include provisions for drug contamination disposal. Instead, it was to facilitate the removal of any impurities from the scalp. Several ingredients in this shampoo efficiently remove marijuana toxins from the hair. This shampoo removes chlorine and THC metabolites, effective in getting rid of toxins from smoking marijuana. To achieve effectiveness, the user should follow the manufacturer’s instructions for using this shampoo.

Old Style Aloe Toxin Rid

Guide on Usage

  • Apply Old Style Aloe Toxin Rid to moistened hair
  • Massage into hair and scalp
  • Leave for 10-15 minutes
  • Rinse with lukewarm water

Aloe Toxin Rid Shampoo + Zydot Ultra Clean

  • Is the main part Of The Macujo Method!
  • Is the main part Of The Jerry G Method!
See Deal →

Zydot Ultra Clean Shampoo

  • Shampoo and Conditioner. Internal Hair Purifying Treatment that removes medications, chemical buildup and other impurities from within the hair shaft.
See Deal →

Zydot Ultra Clean Shampoo

It is an internal hair-purifying treatment that cleans the hair shaft of drugs, chemicals, and other pollutants.  The four-step procedure efficiently dissolves, releases, and removes buildup from the hair shaft to produce cleaner hair. It contains a deep clean shampoo with purifying treatments and conditioners.

  • Shampoo: Eliminates exterior obstacles to reveal the inner hair
  • Purifier: Dissolves and eliminates pollutants by deeply penetrating the scalp, hair follicle, and hair shaft.
  • Conditioner: Adds shine, reduces knots, and makes hair easier to manage

Zydot Ultra Clean Shampoo

Guide on Usage

Step 1: SHAMPOO (package #1): 

Completely wet hair. Only use ½ of the shampoo. Work up a lather by massaging the scalp and hair for ten minutes. Rinse in lukewarm water.

Step 2: PURIFIER (package #2): 

Massage the entire contents of the purifier into the scalp and the hair that is closest to it. Go through your hair (with a fresh comb). Give it ten minutes and go. Make sure to rinse thoroughly.

Step 3: REPEAT Step 1: 

Apply Shampoo Using Remainder of Shampoo (Packet #1). Make sure to rinse thoroughly.

Step 4: CONDITIONER (packet #3):

Massage the entire bottle of conditioner into your scalp and hair. After evenly distributing, comb through the hair. Give your hair a three-minute rest. Make sure to rinse thoroughly.

Old Style Aloe Toxin Rid vs. Zydot Ultra Clean Shampoos

Old Style Aloe Toxin Rid Zydot Ultra Clean Shampoo
  • It permeates the internal layers of the hair and avoids detection
  • The most effective detox shampoo known as it contains high propylene glycol to remove drug contaminants
  • Extremely safe as it is plant-based.
  • It is cost effective
  • It is easy to use
  • It is safe for use
  • It comes in a combination pack including shampoo, conditioner, and purifier which adds individually to its effectiveness.
  • Failed results if not used correctly
  • It is quite expensive
  • Not applicable under 18 years
  • It is not as effective

Debunking Common Myths

You Can Shave to Pass the Test

Leave your head uncut! Two inches of hair on your body will provide an accurate result instead.

You Can Use Hair From Your Brush

The test will show inconclusive results if the hair is not fresh.

Exposure to Secondhand Smoke Can be Fatal

Don’t panic if you inadvertently breathe in any illegal stuff while you’re close to someone smoking it! You won’t be able to record even a trace amount on the hair test.


Aloe Toxin Rid Shampoo + Zydot Ultra Clean

  • Is the main part Of The Macujo Method!
  • Is the main part Of The Jerry G Method!
See Deal →

Zydot Ultra Clean Shampoo

  • Shampoo and Conditioner. Internal Hair Purifying Treatment that removes medications, chemical buildup and other impurities from within the hair shaft.
See Deal →

Frequently Asked Questions

How Long Does It Take Weed to Get Out of Your Hair?

With regular use, weed can be detectable in hair for several weeks to months, possibly even up to 90 days or more.

Are Hair Test Results Accurate?

Yes, they are fairly so, and acceptable generally. Factors such as environmental exposure, hair color, some hair treatments, and poor detection of low-level use can affect results.

Do I Need Follow-up Tests?

This depends on the test requirement. After completing the initial and confirmatory tests, nothing else is required.

What Is the Cost of a Hair Drug Test?

It costs between $65-$250 depending on the testing mode.


It can be terrifying to take a hair follicle drug test, particularly if you use drugs regularly. Hair follicle drug tests provide a longer detection window compared to other methods. It is, however, imperative to move quickly to guarantee that you pass the drug test. You may also want to think about the necessity of researching THC detox products that work well for you.
Irrespective of the short notice associated with your hair drug test, Old Style Aloe Toxin Rid and Zydot Ultra Clean shampoos have proven to provide success in a hair follicle drug test. All you need to do is follow the instructions associated with their use and proceed with your drug test. These options are also safe for your health, with little or no side effects associated with them. As you think about using these detox shampoos, select the one that is most appropriate for you. Best wishes for your drug test.