How to Pass a Hair Follicle Drug Test?

A common concern to many potential employees who use drugs is how to pass a hair drug test in 2022. The anxiety sometimes pushes most of them to use products that may not be effective. But, the easiest way to pass a hair drug test is to avoid using drugs in the first place.

Meanwhile, if you’ve been using drugs before and anticipating a hair drug test, you should quit immediately. Once you stop, the drugs will break down with time and leave your system naturally.

How to Pass a Hair Follicle Drug Test?

But if you’re wondering how to pass a hair follicle test in 2 days, a detox product might be the only solution. Although several ineffective ones are on the market, this article contains some reliable options.

Read on to find out more.

What Is A Hair Drug Test?

A hair drug test involves analyzing a small sample of hair from an individual to confirm the presence of drugs or their metabolites.

Experts use hair drug tests to detect long-term drug use. Drugs and their metabolites are detectable in hair for months after consumption.

Hair drug tests are often more accurate than other drug tests, such as urine or saliva tests. They can detect a longer period of drug use. However, hair drug tests can’t detect recent consumption as accurately as other tests.

How does hair drug test work?

After consuming a drug, your body transforms it into what’s known as metabolites. While your system digests the drugs, it generates the metabolites.

Hair drug tests primarily determine the presence and concentration of a drug or its remains by analyzing a hair sample. The test tells the scientist that you’ve been on drugs for months. This is mainly because drug residues are traceable in hair follicles over an extended period.

Usually, it takes between 7 and 10 days for drug residues to find their way into your hair. Each time you take a drug by any means (smoking or ingesting), it flows into your bloodstream. After reaching the bloodstream, it eventually transmits to other areas of your body, and your hairs are no exception. The drugs get into your hair through your scalp’s oil glands or the follicles.

The residues of the drugs stay in your hair as they grow. As a result, your hair can trap these remnants for several days, even up to three months. Also, the hairs on your head aren’t the only ones these metabolites flow to. Hairs in other areas of your body, such as your armpit, can also trap these elements.

Note that hair samples taken from other body parts could hold evidence of drug usage for up to 1 year. However, those taken from your head could hold the drug evidence for around 90 days.

What Can A Hair Drug Test Detect? – Testing Process And Main Principle

A hair drug test detects the presence of drugs like marijuana in the body of a person. These tests are more effective in detecting the long-term presence of drugs than urine and blood tests.

A hair follicle drug test can trace the use of drugs within the last 3 months. However, the accurate time frame depends on the density and length of the individual’s hair.

Here are some drugs a hair drug test can detect:

  • Amphetamines – including MDMA and methamphetamine
  • Marijuana, which contains THC (Tetrahydrocannabinol)
  • Opioids – including heroin, morphine, and codeine.
  • Cocaine
  • Phencyclidine

Other kinds of hair drug tests could also detect drugs like anabolic steroids and benzodiazepines. But the specificity and sensitivity of these hair drug tests may differ.

Secondly, hair follicle drug testing can trace drugs consumed by smoking or ingesting, not those applied topically to hair or skin. Also, hair drug testing can’t spot the use of drugs less than a week old. It takes many days for drugs to digest and gets into the hair.

Testing principle of hair drug testing

The hair drug testing principle is based on how drugs and their elements integrate with the hair as it grows. When an individual smokes or ingests drugs, they flow into their bloodstream and gradually move to the hair follicles.

As the hair grows, these substances are trapped in an area of the hair shaft called keratin fibers.

To test for the presence of drugs in the hair, an expert would send the hair sample to a lab for analysis. This hair sample is then cut into smaller pieces and dissolved in a solvent. The purpose here is to extract any atom of the drug present in the hair sample.

A common technique used in this test is called immunoassay. The process involves using antibodies to detect the exact drug and its elements. Other techniques used are mass spectrometry and gas chromatography. These techniques separate the hair components and identify the drugs present in them.

The test results come out after the lab has analyzed the hair sample and identified the drugs and their concentration levels.

The main principle of hair drug testing

The main principle of hair drug testing refers to the detection time of drugs and their components in hair follicles. Usually, this period lasts for 3 months (90 days).

So, attempting to pass a hair drug test in 24 hours might be difficult but not impossible. With the right detox product, you could still pass the test. As you read on, you’ll discover the best detox shampoo to pass a hair follicle drug test.

Hair drug testing is one of the common testing programs in some workplaces and criminal justice settings. These are areas where the use of drugs is highly forbidden. Many of these organizations use hair drug tests due to their reliability and accuracy.

However, some factors could affect the accuracy of a hair drug test. These include the amount of drug used, the type of drug being tested, the drug usage frequency, and the growth rate of the individual.

Some other forms of drug testing, like urine and saliva, only detect the short-term presence of the drug substance. Meaning if an individual consumes drugs in the last 3 weeks, such short-term tests may not detect the presence of the drugs.

What Happens During The Hair Drug Test?

Several actions go on during a hair drug test, each of which contributes to the success of the process.

Here’s what you can expect during a hair follicle drug test.

  • The expert would take a sample of your hair, cutting it from the back of the head. Usually close to the hair scalp, around 1.5 inches long, and the width of a pencil.
  • The technician might require a hair sample from another body part for naturally bald individuals.
  • Afterward, they’ll send it to a laboratory for washing and preparing it for analysis.
  • The screening of the hair is the next step. The lab would use a technique known as immunoassay. The purpose here is to determine the presence of drugs or their metabolites.
  • If the immunoassay test results are positive, the scientist will perform another test for confirmation. This is a more sensitive test called GC-MS (Gas Chromatography-Mass Spectrometry).
  • This final test confirms whether or not the previous one is correct. It also checks for the drug’s concentration, if there’s any.

Many experts consider hair drug testing the most accurate option. Aside from its accuracy, it also detects a wide range of drug usage. Some examples are cocaine, amphetamines, marijuana, and many more.

How Not To Pass Hair Follicle Drug Test?

Several substances could make you fail a hair follicle drug test, including your mouthwash. Here’s a short list of materials you should beware of before a hair follicle drug test.

  • Smoking or ingesting marijuana
  • Poppy seeds
  • Pills for weight loss
  • Mouthwash products
  • Antidepressants
  • CBD oil

You might wonder how these substances affect hair follicle drug test detection times. Some components in these materials appear as drugs in a test.

Let’s address these materials in detail for a better understanding.

Smoking and ingesting marijuana

Smoking or ingesting marijuana is one of the quickest ways to fail a hair follicle drug test due to its THC compound. THC doesn’t just stay in your hair follicles; it also flows in your blood and urine and lasts several days.

If you’re preparing for a hair drug test, you might be seeking answers to the popular question, “how long does marijuana stay in your hair follicles?” It majorly depends on your intake frequency. So, the more exposed you are to marijuana, the lesser your chances of passing a hair follicle drug test.

Poppy seeds

Every poppy seed naturally contains codeine and morphine. Your hair follicle test will fail if you take any of these seeds for a few weeks before the test.

Pills for weight loss

One of the popular pills that help with weight loss is Phentermine. The chemical composition of this medicine is similar to that of amphetamines – a medication for ADHA.

Weight loss pills like Phentermine could alter a negative hair drug test when taken at least two weeks before it.

Mouthwash products

Several breath-cleaning products like mouthwash and vanilla extract products usually contain ethanol – a type of grain alcohol. Drug tests in the present world can detect traces of alcohol in the body, including the hair follicles. Using such products could cause a failure in your next hair follicle drug test.


Sertraline or Zoloft is an example of an antidepressant. The majority of these drugs contain elements like benzodiazepines that can change a negative hair test result. Benzodiazepines are mostly found in individuals who have had an overdose of opioids.

Some tests may fail to differentiate benzodiazepines and sertraline. So, failing a hair drug test is possible after ingesting some antidepressants a week or two before your test.

CBD oil

This is another product that can alter a negative hair drug test result. It’s derived from a hemp plant similar to Cannabis sativa – the source of marijuana.

Some countries permit about 5% of THC and some other edible products in this substance. Consuming these CBD products could leave the THC compound in your system and affect your hair drug test.

Misconceptions about hair drug test

Aside from the substances mentioned above, other ideas could make you not pass a hair follicle drug test. Check them below

Bleaching the hair

Bleaching the hair is one misconception many people have about passing a hair drug test. You probably came across the idea online. Note that its success rate is 40%. So, the chances of failing the drug test are still high.

Avoiding Cannabis for a short while

Many believe quitting cannabis products a few days before the test would save them. This is another misconception.

Cannabis residues last in the hair follicles for up to 90 days, as stated earlier. So, you might need to stay away from the substance for 120 days to be free from it. But since you won’t get the test notice 3 months ahead, this option won’t work out.

Going bald

A hair follicle test requires a sample of at least 1.5 inches. So, you’ll need to give your boss a very good reason for taking away your hair, particularly those on your head.

This action is rather dangerous, as it could cost you your job.

How To Pass Hair Drug Test: Macujo Method – Pass A Drug Test In 24 Hours

Drug metabolites could last in your hair follicles for up to 3 months. So, how can you beat a hair follicle drug test in 24 hours, given such a long detection time? A reliable way to beat this drug test is by using the Macujo method.

Macujo is a hair follicle drug-testing shampoo, also known as Macujo Aloe Rid Shampoo. It’s one of the ideal ways to handle the popular concern of how to pass a hair follicle drug test in 2022.

Although its success rate is about 90%, several folks rely on it to beat any hair follicle screening.

Required items:

  • Clean and Clear hair product
  • Arm N Hammer baking soda
  • Macujo Aloe Rid Shampoo
  • Vinegar
  • Liquid Tide

Let’s quickly go through the step-by-step process:

  • Step 1 – Start by washing your hair with the Macujo Aloe Rid Shampoo. Afterward, rinse and dry your hair using a clean towel.
  • Step 2 – Mix water into the Arm N Hammer baking soda. Massage your hair and scalp thoroughly for 5 to 7 minutes with this mixture.
  • Step 3 – Using the Clean and Clear product, massage your hair and let it remain on your head for 30 minutes.
  • Step 4 – Scrub your hair with a few drops of Liquid Tide.
  • Step 5 – Apply the Macujo Aloe Rid to your hair once again and rinse off after a couple of minutes.
  • Step 6 – Massage your hair well with vinegar, and don’t rinse it off.
  • Step 7 – Using Clean and Clear one more time, massage your hair for another 5 to 7 minutes.
  • Step 8 – Scrub your hair again with some drops of Liquid Tide.
  • Step 9 – Finally, rewash your hair with Macujo Aloe Rid Shampoo and rinse off after two minutes. This final wash will remove the smell of vinegar from the hair.

Here are a few additional tips:

  • Apply Vaseline around your ears and on your forehead to prevent rashes effect of Clean and Clear.
  • You can also use a shower cap if necessary.
  • It’s not ideal to use an old pick, comb, or brush in the process.
  • If you’re a heavy user of THC, you’ll need to shampoo your hair up to 10 to 18 times with the method above.

Jerry G Method – An Alternative To Macujo

For those who ask questions like how long does THC stay in your hair and how to eliminate it? The Jerry G method is another option for you. It’s also a very effective choice though it’s not as common as the Macujo Aloe Rid shampoo.

Jerry G is very useful in removing traces of THC in the hair follicles. Unlike the previous product, Jerry G only uses dye and bleach-containing ammonia. However, the aim here is to damage your hair strands – eliminating any drug present in them.

To successfully pass the expected drug test, you must complete this process at least 10 days before the day. So, if you take marijuana regularly, you’ll need to quit at least 11 days before the test.

Required items:

  • Hair dye (permanent)
  • Baking soda
  • Bleach
  • Ultra-clean shampoo
  • Toxin wash shampoo

The step-by-step process:

  • Step 1 – First, bleach your hair using the permanent ammonia dye.
  • Step 2 – To pass the hair follicle drug test, shampoo your hair using Toxin or any other shampoo product of your choice.
  • Step 3 – After 10 days of the Toxin, wash, bleach, and dye your hair once again.
  • Step 4 – On the drug testing day, apply and leave baking soda paste on your hair for about 15 minutes. Afterward, rinse off the paste substance from your hair. This action will take away every drug residue left in your hair.
  • Step 5 – Wash your hair one more time using Ultra-Clean shampoo.

Positive Old Style Aloe Rid Review – How To Pass A Hair Follicle Test In 2 Days

One of the most effective solutions for removing drug toxins from the hair is using a hair follicle drug testing shampoo like Old Style Aloe Rid. It primarily takes away chemicals, promotes hair growth, and thoroughly cleans hair scalps.

Several drug users know its capability, making it very popular in online and onsite markets. So, if you wish to pass your next hair drug test, this is another option to consider.

The working process

Old Style Aloe Rid shampoo penetrates the innermost part of the hair shaft, known as the medulla, through a purifier. It doesn’t only wash off the cortex or surface of the hair; it also cleans the hair from within.

Old Style Aloe Rid shampoo makes the difficult task of removing drug metabolites from the hair simple. This shampoo remains the best pick out of the several tricks available.


Here are some vital ingredients found in the Old style Aloe Rid shampoo:

  • Hydroxypropyl guar
  • Sodium Metabisulfite
  • Aloe barbadensis leaves
  • Sodium Laureth sulfate
  • MEA sulfosuccinate
  • di-Panthenol and many others

Another vital ingredient to note is propylene glycol, which has a good detox effect on the hair. It’s also an antioxidant component due to the presence of EDTA.

Note that with regular detox shampoo, it’s impossible to remove every drug residue in one wash. The reason is that hair follicles contain oily substances and amorphous, which makes drug metabolites hard to come off them.

This is where the Old-Style Aloe Rid comes in. You don’t have to repeat the washing process multiple times to get the desired result.

More details

This product’s prices range from 199.95 USD to 235 USD. The shipping processes occur via USPS, FedEx, and UPS within and outside the U.S. Also, customers can cancel a wrong transaction, though with specific reasons.

Positive Zydot Ultra Clean Review

Zydot Ultra Clean works similarly to the Old Style Aloe Rid. This product also has a good detoxification effect on hair. As such, several athletes, employees, and job seekers who wish to pass a hair drug test use it.

Zydot Ultra Clean works well for different drug usage levels, including light, moderate, and heavy use. However, its main area of concentration is the THC compound. This product removes around 36% of THC in hair follicles in one wash.

How it works

The process begins by breaking down your hair cuticle. In other words, it removes external barriers such as hair styling products and daily buildups around your hair strands.

The purifying agent in the shampoo then penetrates the inner layer of the hair shafts. This action helps to dissolve, release, and remove traces of drugs that may be present in the hair.


Zydot Ultra Clean commits to delivering its products to customers on time. Though, the delivery times could take longer due to a few natural factors like high postal traffic, weather, and the shipping companies performance.

Shipping orders are accepted only within the United States and should be placed between Mondays and Fridays. On eBay, customers in the lower 48 states can receive this product with free shipping. Also, buyers can speed up the shipping process with a fee.

eBay’s Global Shipping Program is used only for international locations. In this case, items are first moved to KY before being transferred to a designated destination. Moreover, international customers cover every tax and duty during each shipping process.


  • 16oz Ultimate Blend Liquid – $35.95
  • 16oz Ultimate Blend Drink Mix – $34.95
  • Ultra Clean – $24.95
  • Ultimate Blend 32 – $44.95
  • Ultimate Blend 16oz Drink 3-Pack – $69.90
  • Ultimate Blend 16oz Mix 3-Pack – $69.90
  • Ultimate Blend 32oz Drink 3-Pack – $89.90

Which Employers Use Hair Drug Tests?

Usually, employers use hair drug tests to confirm the current state of employees’ drug usage. Here are some of the industries that use this form of drug testing:

  1. Government agencies such as the military and law enforcement
  2. Transportation companies like aviation and trucking
  3. Manufacturing companies
  4. Healthcare organizations
  5. Financial institutions
  6. Hospitality and retail businesses

Also, note that employers must follow some general legal guidelines during the testing process. They include providing notice of the drug testing policy to employees and getting their written consent.

When Do Employers Use Hair Drug Tests?

Employers may carry out hair drug testing at different points of the employment process. These include the following:

Pre-employment screening

Some employers would request potential employees to undergo this test as part of the recruitment process. This action helps employers identify who is good enough for specific positions.

Random drug testing

Employers may also perform random drug testing on their employees while on the job. The purpose here is to ensure that the employees stay away from hard drugs while carrying out their duties. Usually, this kind of drug testing occurs without prior notice.

Reasonable suspicion testing

Reasonable suspicion testing occurs when an employer believes that some employees are using drugs. This set of employees would then have to take a hair drug test. Such an action might be due to suspicious behavior of the employees or some other evidence that shows they use drugs.

Other Occasions When You Need To Pass A Hair Drug Test

Aside from the above-stated occasions, there are other cases where a hair drug test is needed. Find them below

Child custody cases

Sometimes, a court would request a hair drug test as part of a child’s parenting or custody time determination.

Parole or probation

In some organizations, individuals on parole or probation are required to undergo a hair drug test. Their release hinges on the success of the drug test.

Athletic competition

Some sports companies would demand that athletes take a hair drug test from time to time. This action is to ensure that they’re not using some performance-enhancement drugs before each sport session.

FAQs About Hair Detox Shampoos

How do you rid your hair of drugs?

Using a detox shampoo is the easiest and quickest way to remove drugs and their metabolites from your hair follicles. There are several available options, but the best pick is the Macujo Aloe Rid shampoo. This product can change any hair follicle test results levels chart within two days.

How long would it take to pass a hair follicle drug test?

The time it’ll take to pass a hair follicle drug test depends on your detoxification approach. If you want the drug and its residues to break down and leave your body naturally, you’ll have to wait up to 120 days.

However, using some detox shampoos like Zydot Ultra Clean, Jerry G, or Macujo Aloe Rid Shampoo would take about 10 to 12 days.

What are the side effects of using hair detox shampoos?

Some side effects of detox shampoos are skin irritation, redness, itchiness, and dryness. These side effects are particular to products with harsh chemicals that rid the hair of its natural oils.

This is why we’ve picked some of the best available options, such as Macujo Aloe Rid and Zydot Ultra Clean. These products offer the best results with no discomforting side effects.

What drugs can a hair follicle test detect?

A hair follicle drug test can detect the presence of drugs and other substances in a person’s hair. Here are the kinds of drugs detectable during the test.

  • Phencyclidine – PCP
  • Cannabis – THC
  • Amphetamines, including methamphetamine
  • Opioids like morphine, heroin, and codeine
  • Cocaine
  • Barbiturates


There are several questions regarding how to pass a hair drug test in 2022. A good example is, can a hair follicle test detect one time use?

Some folks would also ask, what’s the best way to pass hair follicle drug test and how far back do hair follicle drug test detection go?

In many cases, a hair follicle drug test will detect a one-time use, especially when taken less than 90 days to the test. The reason is that your hair follicles can retain drug residues within the same period. So, to pass a hair drug test, you’ll have to avoid taking drugs for about 120 days before the test.

But since this may not be possible, a detox shampoo becomes the best alternative. A good choice here is the Macujo Aloe Rid shampoo.

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