How Long Does Cannabis Stay in Your Hair?

How long cannabis stays in your hair is determined by a number of factors. Here’s what you need to know.

Checkout this video:

The Science of Hair Follicle Testing

Cannabis, also known as marijuana, is a plant that is native to Asia but grown all over the world. The plant contains a chemical called THC, which is the psychoactive component that gives users the feeling of being high. THC is stored in the body’s fat cells, and it can be detected in hair follicles for up to 90 days.

What is hair follicle testing?

Hair follicle testing is a specific type of laboratory testing that analyzes a sample of a person’s hair to detect the presence of substances, such as drugs. The test can identify drug use over a period of months, depending on the length of the hair sample.

Hair follicle testing is used in a variety of settings, including workplaces, schools, and drug rehabilitation programs. The test is usually requested by employers as part of their pre-employment screening process or when they suspect an employee is using drugs.

How does hair follicle testing work?
To understand how hair follicle testing works, it is important to know how drugs enter the hair shaft. Drugs are metabolized in the body and then enter the bloodstream. As the blood flows through the scalp, it carries the metabolites of drugs to the base of the hair follicles.

The metabolites are then incorporated into the growing hair shafts. Once incorporated, they cannot be removed from the hair shaft by cleansing or other methods. The length of time that a drug can be detected in hair depends on several factors, including:
-How often and how much of the drug is used
-The type of drug used
-The individual’s metabolism
-The individual’s overall health
-The growth rate of his or her hair

Generally, drugs can be detected in hair for up to 90 days after last use.

How does hair follicle testing work?

Cannabis can be detected in hair follicles for up to 90 days after last use. This is because THC, the main psychoactive compound in cannabis, binds to the keratin proteins in hair follicles. When THC enters the body, it is metabolized by the liver and deposited in the hair follicles.

Hair follicle testing is not able to determine how much cannabis was used or when it was used. However, it can detect chronic cannabis use over a period of time. For this reason, hair follicle testing is mostly used for workplace drug screening or for legal purposes.

Factors That Affect How Long Cannabis Stays in Your Hair

The amount of time that cannabis stays in your hair depends on a few different factors. The length of your hair, for example, will play a role in how long the cannabis stays in your system. The type of cannabis you use will also play a role. If you smoke cannabis, it will likely stay in your system for a shorter period of time than if you eat it.

Frequency of use

Cannabis can stay in your hair for a very long time. The main factor that determines how long it will stay in your hair is the frequency of use. If you use cannabis daily, it can stay in your hair for up to 90 days. If you use it weekly, it can stay in your hair for up to 30 days. And if you use it monthly, it can stay in your hair for up to 10 days.

Amount of use

The frequency of use is one of the biggest factors in how long cannabis will stay in your hair. If you only use cannabis once, it will be detectable in your hair for around a week. However, if you use it regularly (several times a week or more), it can be detectable for months.

Type of cannabis

Different strains of cannabis can contain different levels of THC, CBD, and other cannabinoids. This can affect how long the effects last and how long the drug stays in your system.

For example, a strain with high levels of THC is more likely to cause psychoactive effects that last for several hours. In contrast, a strain with high levels of CBD may not cause any psychoactive effects but can still be detected in your system for up to several weeks.

Metabolism

Metabolism is one of the main factors that affect how long cannabis stays in your hair. Everyone’s metabolism is different, so the amount of time that cannabis will stay in your hair will vary from person to person. If you have a fast metabolism, the THC will metabolize faster and won’t be detectable in your hair for as long as someone with a slower metabolism.

Methods for Removing Cannabis from Your Hair

Although cannabis is legal in some form in over half of the United States, employers may still drug test for it. If you have smoked cannabis recently, you may be wondering how long it will stay in your system, and whether or not it will show up on a hair follicle test. Read on to find out.

Shampoo

Shampoo is perhaps the most obvious way to clean your hair, and it can be effective in removing surface-level THC. However, depending on the shampoo, it may not be able to penetrate the hair shaft to remove any THC that has been deposited there. In addition, shampooing your hair too often can strip it of its natural oils, leaving it dry and brittle.

Conditioner

Conditioner can actually do a pretty good job at removing cannabis from your hair. Just make sure to use a clarifying conditioner and not a moisturizing one, as you want to make sure all the residue is gone. Be generous with the conditioner, massage it into your hair and scalp, and let it sit for a few minutes before rinsing it out. You may need to repeat this process a few times to get all the cannabis out.

Vinegar

Vinegar can be used as a natural weed killer, but it is also an effective way to remove cannabis from your hair. All you need to do is mix equal parts vinegar and water in a bowl and apply it to your hair. Leave it on for 20 minutes, then rinse it out with warm water.

Baking soda

Baking soda is a common household ingredient that can be used to remove cannabis from your hair. Simply mix baking soda with water to form a paste, and then apply the paste to your hair. Leave the paste on for 30 minutes, and then rinse it out with warm water.

Scroll to Top