How to Pass a Hair Drug Test: Essential Steps for Success

Due to its long detection window, drug test through hair follicles is gaining popularity among employers and public organizations. Therefore, most Americans seem to be thinking about how to pass a hair drug test. Hair drug testing is the most efficient and non-invasive drug testing method, and employers across the country prefer this method to check new aspirants for the use of drugs. Thus, it is essential to remain always prepared for drug tests. However, it is possible only if you understand how we can detect drugs in hair follicles and how long weed stays in a hair follicle. Some individuals explore additional measures, such as using specialized detox products like Old Style Aloe Toxin Rid or Zydot Ultra Clean, to increase their chances of passing these tests successfully.


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 →

Understanding the Hair Follicle Drug Test

As the name suggests, most of us think hair follicles are tested in drug tests. However, the facts are different. A hair follicle test does not test the actual follicles. Instead, the lab technicians carry out the testing on the hair shaft to detect traces of abusive drugs.

How Does Hair Follicle Drug Test Work?

If you want to know how long it takes weed to get out of your hair, you must understand the workings of a hair drug test. When you consume drugs, THC metabolites accumulate in hair follicles that deposit these to the hair strands as they grow. The working of a follicle drug test can be explained as follows:

  • Collection of 1-1.5 inches long hair sample, preferably close to the scalp for the hair test
  • Submission of the sample to a testing facility where the hair sample is washed to prevent external contaminants that affect test results
  • Cutting hair into small pieces and putting those through various chemical tests for the detection of drugs
  • Usually, the labs issue results 24 hours after submission of the samples.

How Long Does Weed Stay in a Hair Follicle?

Drug testing labs usually take 1-1.5 inches of hair strands that detect drug usage over the past 90 days. However, a longer sample can help detect drugs over an extended period. Several factors affect the detection window. These include drug testing methods, drug consumption techniques, frequency of drugs taken, and some bodily factors. Additionally, individuals seeking to improve their chances of passing a hair follicle drug test often consider using detoxification products like Old Style Aloe Toxin Rid or Zydot Ultra Clean, which claim to aid in the removal of drug residues from the hair shaft, potentially enhancing the likelihood of a negative test result. We can illustrate the duration of weed in hair follicles through the following table.

Weed Exposure (Frequency) Hair Follicle Detection Period
One time use 90 Days
Moderate Use 90 Days
Heavy Use Up to 6 Months

What Does the Hair Follicle Drug Test Examine?

Hair follicle samples are delivered to the laboratory after they are collected for testing. Lab technicians analyse these samples for the presence of THC metabolites. The positive or negative results show the drug consumption of the past 90 days or more. Normally, a hair test detects the remains of the following drugs:

  • Marijuana
  • Ecstasy
  • Cocaine
  • Amphetamines
  • PCP
  • Methamphetamines
  • Opioids

Note that Cannabis is legal in some countries for entertainment purposes. Still, several employers require their staff to pass drug tests over time. Many also ask new applicants to pass tests before completing the hiring process.


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 →

Hair Follicle Drug Test Cut-off Levels

Do you know that almost all drug testing labs use cut-off levels to show positive or negative results? Usually, these cut-off levels are based on the substances being tested. Sometimes, these have to comply with industrial or regional standards. If the concentration of the substance is equal to or greater than cut-off levels, it means a positive result.

Drug Type ELISA Test Cut-offs pg/mg GC-MS Test Cut-offs pg/mg
Cannabis 1 0.1
Opiates 500 500
Cocaine 300 300
Amphetamines 300 300
PCP 300 300

Scenarios of People Having to Pass Hair Drug Tests in Various Contexts

Since the legality of marijuana usage in some American States, all public and private employers require their employees to pass drug tests at times. The most common three scenarios are:


Most industries in the USA have strict drug testing policies for hiring new employees. Emily is also a prospective employee for an office-based job in a safety-sensitive industry. She was a marijuana smoker a few months ago. She stopped smoking a month ago before applying for the job. It is challenging for her to pass the follicle drug test because of its long detection window.

Professional License

Another scenario where you must pass a hair drug test is getting a professional License. Whether you are a driver or want to renew your healthcare professional license, it is mandatory to pass the test. Mark, a healthcare professional, is also facing a drug test for renewal of his license because the fresh regulations of the country require him to clear a drug test. Although he is not a smoker, his history of occasional smoking is posing a risk to his professional practice. To boost his chances of passing the test, Mark explores using Old Style Aloe Toxin Rid, a renowned detox shampoo effective in removing drug metabolites. Another option he considers is Zydot Ultra Clean, a popular detoxification shampoo designed to deep-cleanse the hair and eliminate traces of substances, offering a potential solution for individuals facing stringent drug testing requirements.

Legal Custody Cases

Legal custody battles are much more common in the United States, where parents have to prove their fitness to retain the custody of children. Jane is also among those mothers who want to be the custodian of their children. Despite leaving the use of amphetamines a few months ago, her previous history is a concern because the court has ordered a follicle test.

Hair Follicle Drug Test Procedures

If you want to pass a hair follicle drug test easily, you must understand its procedure. Usually, there are three ways to perform the test.

  • The test can be performed either at a lab or in a hospital.
  • Your employer arranges for sample collection at the workplace and sends those samples to the lab facility using home hair drug testing kits.
  • Nowadays, people can avail of online testing facilities.

Some employers also make it mandatory to perform tests under supervision.

Interpreting Drug Test Results

To know how long it takes for a hair follicle drug test to come back, you must know how to interpret these tests. The results are shown either as negative or positive. However, persons with a positive result may have to wait a little longer. For persons with negative results, these are available within 72 hours after the sample collection.

However, if a sample shows positive results in the initial screening, more advanced and specific methods are employed to interpret the results further. These methods are:

  • Gas Chromatography-Mass Spectrometry (GC-MS)
  • Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

Factors Influencing Toxin Retention

Do you know that all those factors that affect hair growth also influence the toxin retention in your body? Typically, the period is considered ninety days after the intake of drugs because human hair grows 0.5 inches a month, and testing labs require 1.5 inches-long hair strands for hair follicle drug testing. Therefore, the time calculated is 90 days, which may increase due to several other factors.For individuals seeking to expedite the detoxification process, products like Old Style Aloe Toxin Rid or Zydot Ultra Clean are often considered as they claim to assist in reducing toxin levels in hair strands and can help to pass this test quickly.

The stay of THC metabolites in the hair strands depends on the following factors:


The toxin retention in the human body greatly depends on BMI (Body Mass Index), as drug metabolites are stored in fat cells. It means that people with higher BMI will have toxins in their bodies for extended periods compared to those with low BMI.

Gender Differences

Do you know that your sex also plays a crucial role in the retention of the drugs in your body? Females retain toxins in their bodies for longer periods than males because of higher fat cells. Moreover, the rate of metabolism in females is slower than in males, and drug metabolites will stay longer in their bodies.


Remember that several genetic factors influence enzyme activities in the body, ultimately affecting metabolic rate. So, the male human body processes the metabolites quickly to eliminate toxins compared to females.

Frequency and Mode of Drug Usage

Chronic or frequent drug intake leads to higher toxin accumulation in fat cells. Moreover, the body adjusts itself to the drug usage and sends no signal for its removal. This results in slower metabolism and release of toxins from the body.

The intake mode of drugs also affects their retention in the body because it determines how quickly metabolites enter the bloodstream. For example, smoking marijuana will cause THC to remain in the body for a longer time.

Pre-Test Preparations: What to Avoid

If you want to pass a drug test, you should know how long is marijuana detected in the hair follicle drug test. Avoid certain foods that increase the chances of positive results. Below are the things to avoid passing drug tests.

Poppy Seeds

Many people consume poppy seeds as a food item and test positive for the drugs because of codeine and morphine in these seeds.

Smoking Cannabis

Smoking cannabis also tends to give positive results ninety days after smoking. Remember that blood and urine absorb toxin effects, but the hair cannot. THC metabolites remain in the hair for extended periods and cause positive results. Therefore, it is wise to refrain from smoking to pass the tests.Some individuals use products like Old Style Aloe Toxin Rid or Zydot Ultra Clean as part of detox regimens to help remove toxins from hair strands and increase the chances of passing hair drug tests.

Weight-loss and Antidepressant Pills

If you are eating weight-loss pills, there are chances of your testing positive because many pills have phentermine and other chemicals, which are detected in tests.

Products Like Mouthwashes

Ethanol and alcohol test positive in hair tests for THC. Thus, refrain from using such health and hygiene products for passing hair drug tests.


There are more chances of people using CBD oil being positive because it contains 5% THC.

Debunking Common Myths

Certain myths about how to pass a hair follicle drug test are common among people in different parts of the world. Let’s clear these myths individually to help you pass the test.

  • Many people think that bleaching or dyeing the hair can help you pass a hair follicle drug test. It is not at all true because bleaching or dyeing can alter the appearance of your hair but cannot change the internal composition. There is only a 40% chance that you may pass a hair drug test after bleaching or dyeing your hair.
  • Some people believe shaving their heads will help them pass drug tests because the testers cannot collect the required sample hair length. They do not know that lab agents can take hair samples from any part of your body to proceed with the drug test.
  • There is also a myth that immediate drug cessation can help people pass. They are unaware of the fact that THC metabolites stay in the hair for up to 90 days after consuming drugs.

Drug metabolites remain in hair follicles for a longer time. Therefore, it is mandatory to leave drug usage at least 90 days before going for hair drug testing to ensure negative results.

Strategies for Passing Hair Strand Drug Tests

If you have to take a follicle test, use the following strategies:

The Macujo Method

With a more than 90% success rate, it is one of the most practical methods to eliminate toxins from hair strands. The main ingredients used are:

  • Vinegar
  • Clean and Clear Hair Product
  • Tide Liquid
  • Old Style Aloe Toxin Rid

Below are the detailed steps used in this method:

  1. Soak hair with warm water, massage hair and scalp with vinegar for about 30 minutes
  2. Apply a substantial amount of Clean and Clear herbal product and leave it for 30 minutes
  3. Wash and rinse your hair with Old Style Aloe Rid Shampoo
  4. In the end, hair with liquid Tide and leave hair dry for 30 minutes

Repeat the Macujo method several days before the test to eliminate toxins for optimal results.


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 →

The Jerry G. Method

Unlike the above method, Bleach and Dye techniques help you get rid of drug metabolites. The Ammonia in these substances damages the hair to open cuticles and remove traces of toxins. The main ingredients include:

  • Bleach
  • Baking Soda
  • Toxin Wash Shampoo
  • Permanent Hair Dye
  • Zydot Ultra Clean

The method includes the following steps:

  1. Bleach and dye your hair with permanent hair dye with Ammonia
  2. Apply Old Style Aloe Toxin Rid and leave it for some time. Rinse your hair with warm water
  3. 10 days after using Toxin Wash Shampoo, repeat the process once again
  4. Apply Baking Soda on the test day and leave it for 15 minutes
  5. Rinse your hair with Ultra-Clean Shampoo

Mastering Hair Detoxification

You can also use different detox shampoos to shed THC metabolites. The two most commonly used shampoos are:

Old Style Aloe Toxin Rid

Old Style Aloe Toxin Rid

It is the best hair detox shampoo for a drug test that gives ultra-fast cleansing of the drug remnants from your hair. The shampoo is also famous for stimulating hair growth. Old Style Aloe Toxin Rid shampoo penetrates the hair follicles’ innermost layers and eliminates toxic chemicals. It contains:

  • Hydroxypropyl Guar
  • Sodium Metabisulfite
  • Di-Panthenol
  • Sodium Laureth Sulfate
  • Propylene Glycol
  • MEA Sulfosuccinate

You can read the usage directions on the bottle or go through the following tips for accurate results.

  • First of all, clean your hair using a regular shampoo.
  • Now, take 0.2 ounces of Toxin Rid Shampoo and massage all the hair thoroughly.
  • Wait for 15 minutes and wash your hair with warm water.


  • Product of a reliable company
  • You can use it with other products
  • Drives out all toxic substances without damaging the hair
  • Good customer reviews


  • Quite Expensive
  • Only 5 ounces of shampoo in a bottle
  • Available only through the official website

Zydot Ultra Clean Shampoo
Zydot Ultra Clean

Zydot Ultra Clean shampoo it is another top-selling product that removes the external barrier to reach the internal parts of hair follicles. Its main ingredients are:

  • Water Aqueous
  • Extract of Aloe Vera
  • Cocamidopropyl Betaine
  • Sodium Laureth Sulfate
  • Sodium PCA
  • Cocamide DEA
  • Panthenol
  • Tetrasodium EDTA
  • Citric Acid
  • DMDM Hydantoin
  • Sodium Thiosulfate
  • Methychloraisothiazolinone
  • Sodium Chloride
  • Fragrance

You can use the shampoo to clear follicle tests in the following easy steps.

  • Shampoo your hair with ½ packet and massage for 10 minutes. Rinse the head with lukewarm water.
  • Apply purifier onto the scalp, comb hair with a new comb, and leave it again for 10 minutes.
  • Now, apply the remaining ½ packet of Zydot Ultra Clean shampoo and repeat the process.
  • Apply conditioner, massage hair for some time, and rinse after 3 minutes.


  • Quick action formula
  • One-time use before the test is enough
  • Affordable
  • Widely Available


  • May contain harsh chemicals
  • Missing detergent and cleansing agents

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 (FAQs)

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

Weed can be detected in hair follicles up to 90 days after intake. However, the period may differ in some due to body factors.

Will I Pass A Hair Drug Test If I Smoked Once?

Whether you smoke once or frequently, you must leave smoking at least 90 days before testing. Moreover, using detox shampoos and detox pills is also important to test negative.

How Often Should I Use Detox Shampoos for Effective Results?

You can pass a 12-panel hair follicle drug test by using detox shampoos several times before the test. The prolonged use aims to maximize your chances of testing negative.

Can Detox Shampoos Cause Harm or Damage to the Hair?

Yes, using these shampoos can cause harm or damage to the hair because they contain potent cleansing agents that can strip the natural hair oil.

How Long Does It Take for a Hair Follicle Drug Test to Come Back?

The time it takes for a hair follicle drug test to return varies. Factors such as the testing laboratory, type of test, courier services, and the complexity of the test influence the turnaround time. Generally, results can range from 1 to 5 business days. To get a more accurate estimate, it’s recommended to inquire directly with the testing facility or the entity conducting the drug test.

Can I Use a Regular Shampoo with A Detox Shampoo?

Usually, it is advisable to avoid using detox shampoos such as Old Style Aloe Toxin Rid or Zydot Ultra Clean in conjunction with regular shampoos because the ingredients in regular shampoos may interfere with the detox process.


To sum up, hair follicle drug testing poses significant challenges because of its extensive detection windows. Meticulous preparation and effective detoxification methods are required to pass hair tests for THC. You can either go to a testing facility for hair drug testing or use hair drug testing kits. However, using the Macujo and Jerry G methods, you can beat the hair follicle drug test. There are also certain detox shampoos available with proven results.