Making Marijuana BHO (Butane Hash Oil) Safely

February 10, 2021

It is a product of many names: BHO, honey, erl, hash oil, honeycomb, honey toast, wax, shatter, glass, whip, comb, ‘tane, and more. As its popularity increases, more and more people are learning about butane hash oil (BHO) made from marijuana. There’s a reason it’s becoming so popular in recent years.

BHO sounds scary but can be extremely enjoyable when it is prepared correctly. Many people choose to make it themselves so they know exactly what is in it, and can rest assured that it was made safely.

This article will help you understand what it is and how to make BHO from marijuana in a safe and healthy way. Please keep in mind that it was written for information purposes only!  ILGM does not encourage any illegal activity and take no responsibility on what you do with this information.

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While critics argue that smoking BHO must include a certain amount of butane being inhaled in the process, even with the purest and most properly prepared BHO, it’s important to consider that the average lighter also contains butane as fuel. If you use a regular lighter to smoke a pipe, then you are also bound to inhale some of that butane, aren’t you?

Is BHO safe
Is BHO safe

Of course, any type of smoking is going to come with unavoidable and unhealthy aspects. Smoking anything is never going to be as healthy as inhaling pure air. Many assert that smoking BHO is better than smoking raw marijuana with a pipe, however, so that makes it worth it for some who enjoy smoking BHO.

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It is also important to consider your personal security. In California, for example, BHO is completely illegal. That means making it, selling it, or even having it are all considered a felony. In addition to it being a security risk for those using it, distributing it, and making it, it also means it is difficult to ensure safe laboratory conditions when it needs to be done in secret. Safety gear is generally at a bare minimum during illegal extractions, and many new people who are interested in making BHO are given misleading information, such as “just don’t smoke while you make it, and you’ll be fine.” This is extremely misleading and a dangerous lie. When there are no official rules or regulations, however, dangers increase.

Is making BHO safe
Is making BHO safe?

When making BHO you must take every precaution possible. Butane is highly flammable, all extractions must be done outdoors, doing extractions indoors can be extremely dangerous, meaning you could catch yourself and your house on fire easily.  Always keep a fire extinguisher nearby and make sure to wear safety equipment like gloves and eye protection.

There are many documented cases of people blowing themselves and/or their apartments up while attempting to make BHO. People were burnt from an accident during the process and later died in the hospital. Not only is this damaging to their own lives (and the lives of others), but it also is damaging the reputation of BHO in general.

Making BHO yourself without knowing what you’re doing could not only result in harming yourself but even if you survive the process, it could also harm others. Plenty of rookie BHO-makers feel as though they have confidently and safely made BHO for others to smoke, and then it turns out that they did not perform the evaporation process completely properly, and then have caused other people to inhale unhealthy substances. Not only that, but it also gives the BHO movement (not to mention the marijuana movement) a bad name — which is something we in the marijuana industry do not need right now.

The process of making BHO is also illegal in most places, so you should think long and hard about whether making your own BHO is actually worth all the risks involved.

How to make BHO

With the above warning aside, we have committed to providing you with information to make your own BHO. If done correctly, there are a lot of positive aspects to making your own BHO, and it ultimately is safer for you (assuming you know what you’re doing). Therefore, the below instructions are provided for those interested in making their own BHO.

Which butane should you use?

Before collecting the necessary ingredients for making BHO, you will need to make an informed decision about which type of butane to use. There are two general types to choose from: Isobutane and N-Butane. Other types of butane likely have propane mixed in. While generally less expensive, Isobutane is often considered more hazardous and toxic than N-Butane. N-Butane, therefore, works best for this recipe. Not only is it safer, but it also works better for extraction and will not leave behind a residue in your final product.

How to make BHO
How to make BHO?

You can find pure N-Butane in gas supply companies, but not in retail stores. The most reliable companies include Win, Sarome, Cora, CTC, Colton, Dunhill, Ventti, Colibri, Calor Gas Match, Unilight, Supergas, K2, Lucienne, Newport, Nibo, Fackelman, and Davidoff. To check the quality of butane from a company you aren’t sure of, spray a large quantity of butane on a mirror, wait for up to 10 minutes, and see if there is a poor-smelling residue left over. If so, it’s not a good idea to use it for making BHO.

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Which marijuana should you use?

Of course, we should also pay close attention to what kind of marijuana you should use for this recipe. The higher quality the marijuana, the higher quality your BHO will be — the importance cannot be emphasized enough. Your best bet is to use whole buds that are fresh, recently dried and put through the extractor. Grade A oil can be accomplished via one extraction; grade B oil can be accomplished on a second extraction after grinding up the buds.


one 10-oz can of butane per 1-oz of marijuana
one extraction tube
one medium Pyrex dish
one large Pyrex dish
one electric heating pad
one razor blade scraper
a concentrate container
a purging system (optional)


Extract the marijuana. First, fill your extraction tube with the strain you have chosen. Prevent any air pockets from forming, and make sure the grass you are using is extremely dry. Fill the tube, pack it down, and then repeat until full and air-free. For less plant material, use a smaller tube. Next, fasten the screen (or a mesh coffee filter) to the bottom of the tube. Hold it over the medium Pyrex dish, then get your butane and put the nozzle right over the top hole in the tube. Allow the butane to flow into the tube, then wait for up to a minute until the liquid begins to drip into the Pyrex dish. Use as many butane cans as necessary. Allow the drip to continue for several minutes. The liquid should appear gold in color.
Once you have completed the extraction process, you will need to evaporate the liquid so that the harmful butane can be removed. Get the large Pyrex dish and put the medium one inside of it. Then, put hot water in the outer, larger dish. This will cause the butane to begin to evaporate, which should take between fifteen and twenty minutes. Replace the hot water as needed to keep it hot. For your safety, be sure there is plenty of ventilation during this process.
Purge it. Purging is the process to complete the removal of the butane honey/hash oil. Using a purging system is the best way to do it, but many money-conscious people prefer to use an electric heating pad instead. Simply set it to high heat, and then place the medium Pyrex dish on it for an hour or more. Watch it carefully. It is finished once the oil stops bubbling. Honey oil that has begun to become hazy or cloudy in appearance looks that way because of trapped butane. Purge it again to get rid of all the butane. One simple way of checking if there is any butane left in it is to touch it with a flame — if it catches, there is still butane that needs to be removed.
Store the oil. Use the razor blade scraper to get all of the oil out of the dish, and then put it all into a concentrate container. As long as it remains in an airtight container that remains dark and cool, BHO can last a long time. If improperly stored, you can expect the substance to become dry, tasteless, and less potent.

FAQ about Butane Hash Oil

Is butane hash oil safe to smoke?

Yes, It is safe to smoke but some illegal hash oils, poses unique risks. such as: Chemical impurities, Lung injuries, Burn risks and more

How long does hash oil stay in your blood?

Blood: Up to 3- 4 hours
Saliva: Up to 72 hours
Urine: Up to 30 days

Are there any side effects?

Yes, here are some of the side effects you might encounter: dizziness , fainting, anxiety, hallucination, changes in mood, impaired memory and more

Enjoyed the article? Would you like to start growing marijuana for your own BHO? Download my free marijuana grow bible and order some marijuana seeds. All top quality marijuana seeds are available in my marijuana seed shop. We ship seeds to the US, CA and many other countries. For any grow related question please visit the marijuana support page.

The founder of I Love Growing Marijuana, Robert Bergman, is a marijuana growing expert that enjoys sharing his knowledge with the world. He combines years of experience, ranging from small-scale grows to massive operations, with a passion for growing. His articles include tutorials on growing... [read more]

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  1. By Chemist ,20 Mar 2016
    No offense. Your advice is terrible on bho. A human should not be near the extraction site. You don't even tell people to do it OUTSIDE or use pneumatic air ventilation. Using a line to separate the person from the […]Read More
    1. By i think youre an idiot ,17 Nov 2017
      youre an idiot and probably a democrat too as a refrigeration specialist i make my bho all the time and if you have common sense and follow those instructions its safe . well ventilated and vacuumed makes strong dabs
      1. By Paul ,02 May 2018
        Dude you're a ignorant asshole name calling little bitch! Smoke a joint prick!
      2. By Paul ,02 Jul 2018
        You're the fucking idiot. You FUCK!
      3. By Steve ,02 Jul 2018
        I do love how people call others names but can't spell properly. Fucking IDIOT!
      4. By Fidel ,07 Jun 2020
        Using Nbutane by means of polarization is safer and much more time and cost effective and efficient. Tamasium in the business.
    2. By jim beam ,28 Jan 2018
      i 2nd this motion. you dont even MENTION any ventilation at all. fucking nuts. this is supposed to be an article on safely making bho and youve left out the single most important safety measure. asshole
    3. By Richard Brehaut ,24 Oct 2018
      Chemist. You must have inhaled a product before you posted. First, any newbie would have to get more information, or do you think. butane-herb, and done. Come on. I get it, it wasn’t mentioned not to smoke, but ten years […]Read More
    4. By Okiemike ,07 Nov 2018
      That's fine if you have the money to buy the extractors. It's very easy to make and if you are careful it can be done.unless you are retarded
      1. By Mike ,25 Nov 2018
        Buy co2 extracted stuff? Yeah right, I will make my own Thank you. Butane is safe if you are not a moron.Do it outside and do not use a flame around it.Use a pan of boiling water or just let […]Read More
    5. By Jonathan badilla ,23 Jun 2020
      This is one ignorant asshole masqueradeing as a chemist
    6. By Jack and the jaker ,15 Nov 2020
      Lol you are probably a retired COP. Who thinks that they are the law and definitely the smartest guy in the room. Lol turns out. People reserve the right to fuking be wrong. Or Blow there faces off or drink […]Read More
  2. By Gomez T Fog ,20 Mar 2016
    I have to agree with chemist on this one. I'm 100% for cannabis. I also luv this site. But screwing around with butane is not the smartest thing in the world to do. I won't buy off the street cause […]Read More
  3. By Curt Allen ,13 Apr 2016
    BB I have a funny thing happen to one of ny plants.I had it inside under lights until it was about 5 inches tall. Then took it outside where i had some great worm dirt about 5 weeks into the […]Read More
    1. By latewood.ILGM ,14 Apr 2016
      Curt Allen, Perhaps you have a green thumb. It may be advisable to you, not to let everyone be privy to your grow. (Your post is off topic) I suggest you join our support forum and start a topic in […]Read More
    2. By Les ,13 Oct 2017
      I think maybe the Worm Castings had a lot to do with the greening up of the plant. I once put some castings on the top of the dirt and the roots came up to the top . They were […]Read More
    3. By 448 what’s the number mean to you ,23 Dec 2017
      Marijuna grown in colder tempautre looks danker and do you know the strain... Anyways I get Reggie from our southern neighbors anyways they all year during winters harvest the bricks come with purple looking fire not exactly stronger but looks […]Read More
    4. By peanut ,01 Oct 2019
      From my experience most growers grow with 24/7 ligth on while I see big difference in only have 18 hours of light and 4-6 hours dark, my plants are really sticky and full of trichomes in vegetive state, and trichomes […]Read More
  4. By latewood.ILGM ,14 Apr 2016
    Chenist & GomezT, In view of your protests I re-read the entire article. I see warnings in the article and a sound tutorial on making Honey Oil. Sorry you disagree. Disclaimer: For clarification. No one should attempt to make Honey […]Read More
  5. By Kris ,17 Apr 2016
    Have to say I agree with Latewood, thorough disclaimer, and a tutorial, better info then the youth that want to try are going to get from the street, and they are going to try anyway, so here, be Careful. PS. […]Read More
  6. By Cordy Dell ,13 Apr 2017
    Ide like to understand the process diferences of wax vs. Shatter a bit more. Any help? Ive made olenty of shatter but would like to try wax. What do i need to change?
  7. By Dave Angel ,13 Apr 2017
    Butane (lpg) is not, of itself, toxic.
  8. By shack ,14 Apr 2017
    AS far as safety sure seems like pumping 20 gallons of gas in my car is more risky then blasting 2 cans of butane in a tube.
  9. By Nick ,27 Apr 2017
    Anyone complaining about BHO, come to Colorado where we make concentrates a dozen different ways. They even have BHO kits that come it everything except the Butane and the Flower for $100. Comes with rubber forearm length gloves, goggles, two […]Read More
  10. By Frikme1 ,20 Sep 2017
    Fk off, love makin' it. All's good if you know what you're doing.
  11. By Mickey ,12 Oct 2017
    BHO i love my home grown!i like to play it safe.i have a really good thing.i would really not want to eliminate myself with fire!
  12. By Mark ,15 Oct 2017
    I have been making bho for a few years now and always do the process outside where there little to no chance of an explosion. I use all the small bud and trim and the product is amazing. I suffer […]Read More
  13. By FredyJohnSmith ,17 Apr 2018
    A pretty nice explanation you have given here especially on creating BHO, Till now I don't know how to make it at home. Thanks
  14. By Lance ,13 Oct 2018
    Apart from the 180 criticism, good read. No shortage of assholes thinking they’re the smart kid in the room. So staying on topic my question is how do you know the extraction has removed as much product as possible. What […]Read More
    1. By Mike ,25 Oct 2018
      Use a white Pyrex casserole dish. When the butane drips clear. You are finished extracting.
  15. By Michael Duckwall ,25 Oct 2018
    I appreciate this tutorial and thank you. I am stunned and amazed at some of the childish comments and because we are talking about weed, you would think some of these folks would not talk politics and call each other […]Read More
  16. By Farmer 420 ,25 Oct 2018
    Do your research first from all sources.. Extractor will get very cold when butane goes through. Need strong elbow length gloves. It is easy to do as long as you are very careful. Butane has a low boiling point so […]Read More
  17. By Mike Highfield ,09 Nov 2018
    I've been growing for many years now and really enjoy having a garden.Only started making BHO for ten years. I Don't have any of the fancy machines but would like to try using co2. Someday.I enjoy reading your web site […]Read More
  18. By Stephen ,26 Apr 2019
    WTF....the mans giving free books...he's been at this racket more then most of ya Has been on the Earth. .fucking calling the fucking class some of ye...f all ur going to do is complain and bitch.... […]Read More
  19. By Stephen ,26 Apr 2019
    Jim beam and others...before ye open ur mouths I suggest that you think first.... your the fucking idiots...go back and read he's article again...but this time read it before you comment on it...he did mention that it should be done […]Read More
    1. By Josh ,17 Oct 2019
      50% Agreed... I Understand The Frustration. But I Think You Killed The Thread Bud. Ya Come Off Pretty Hot Headed.. But Yea, I Get The Frustration. No Offense Man. The Article *DOES* Mention Ventilation, Butane Types, Safety Gear. They Do […]Read More
  20. By Danny ,06 Dec 2019
    Hey bro first loved the article Second my question is about making wax i make it all the time check me out on instagram @real_i_b, my ?2 you is do u think it would be more potent if i were […]Read More
    1. By Weston ,15 Nov 2020
      People say dont do that cause your not eating it. Unless you are.
  21. By Crystal ,07 Dec 2019
    Thankyou for sharing your knowledge. I use wax for multiple medicinal reasons. I often find myself disappointed. People say I'm picky . Some get. Offended once I've sampled their product and choose not to purchase due to the butane taste […]Read More
  22. By Rick ,27 Mar 2020
    Awesome information if you have any videos showing whole process I'd love the education
  23. By Ben ,25 Jul 2020
    What type of electric heat pad do you need to purge BHO? I'v got a heat mat for my seedlings but I don't think that will be hot enough. If not were can I get one?
    1. By Wes ,15 Nov 2020
      Get an infrared themometer at hardware store around 20 bucks or less to see how hot ur pad gets.
  24. By Paul J. Giragosian ,28 Jul 2020
    Hi, Live in Providence North, R.I. AND I am a medical patient and I would like to press when we come back company can you please get back to me and let me know how about going through or not […]Read More
  25. By William ,01 Oct 2020
    Very helpful content, I wasnt sure on the purging process an this has opened my mind up to the risk an good ways to get benefits from bho, thank you frfr.
  26. By hemp pen ,10 Oct 2020
    Well, I’m glad to have read this to say the least. Never would have dove into this topic myself. Very interesting!
  27. By Savannah ,11 Nov 2020
    Hi was curious can u blast bho on an aluminum cookie pan?
  28. By Weston ,15 Nov 2020
    Does my BHO need to be clear. I prurge it on a heating pad usally no more that 95% but it always stays blond or looks like live pressed rosin
  29. By Christopher ,25 Nov 2020
    Will the "purging" process work if concentrates taste like burned rubber?

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