Glass plays a very important role in the lives of most regular cannabis smokers. Whether you prefer pipes, bongs, or dab rigs, your piece is going to get dirty with frequent use. Dirty glass lined with resin will restrict airflow and produce a less flavorful hit. Eventually, the piece may even become clogged completely. This is easy to fix with our step-by-step guide!

There are a variety of dedicated glass-cleaning solutions on the market today; however, they are expensive and most don’t work as well as the method we will outline. These store-bought solutions can easily be replaced with two household items; isopropyl alcohol and salt. Rubbing alcohol is a component in most glass cleaning solutions (like Windex) and the salt adds an abrasive element that is especially helpful in removing sticky chunks of resin. We like to incorporate the use of Q-tips, pipe cleaners, and paper towels for those tricky spots.

Necessary Items:


Sink area with running water

Isopropyl Alcohol (91-99%, higher the percentage the better)

Salt (Epsom and/or coarse sea salt)

Q-tips and/or pipe cleaners

Cotton balls (optional, to cover openings)

Paper towels

A plastic zip-lock bag (if cleaning a smaller piece, like a bowl)

1. Prep your Glass

Empty the dirty water from the piece (if applicable) and rinse the inside and outside of the glass with warm water. The goal here is to rid the glass of dirty bong water and any major chunks of resin.

Note: resin in this case refers to the residue produced by smoking cannabis through glass as opposed to the fresh resin (trichomes) produced by the cannabis plant.

2. Add Solution

The next step is to subject the glass to the salt and alcohol solution. For small pipes, chillums, glass blunts, and one-hitters, this step is best performed with the help of a plastic zip-lock bag. Fill the plastic bag with roughly a 2:1 ratio of alcohol to salt and then submerge the glass piece. Be sure to zip the bag completely shut before proceeding to the next step.

For bongs, bubblers, and dab rigs, the solution will be added inside the main chamber. The appropriate amount of salt and alcohol will vary based on the size and form factor of the glass. As a general rule of thumb, we would suggest filling the glass up with alcohol to a level consistent with the water line. An optional, but helpful step is to use cotton balls, a cork, or similar type stopper to plug any openings (like a downstem opening). This helps prevent making a mess in the next step. If your glass is extremely dirty, it may benefit from a 30+ minute soak in the salt and alcohol solution before moving to the next step. For routine cleaning, there is no need to let the glass soak; it can be fully cleaned in the next step. Pro Tip: adding a dash of distilled white vinegar to the alcohol solution will increase acidity and makes the solution work faster and dissolve more – including hard water stains.

3. Shake Vigorously

Firmly grasp the glass and/or the zip-lock bag and shake vigorously. The salt and alcohol solution will scrape the resin from inside the glass.

Continue to shake until the glass is completely clean. For those spots requiring an extra bit of detail, incorporate the use of an alcohol soaked Q-tip or pipe cleaner.

We also recommend wiping down the outside of the piece with an alcohol soaked paper towel. This will remove any fingerprints, dust, and dirt stuck to the outside of the glass.

4. Rinse Thoroughly

Empty the dirty solution and rinse thoroughly with water. At this point, you may notice that the glass is not completely clean. If this is the case, simply repeat Steps 2 and 3 with freshly prepared solution until the glass is crystal clear. Once clean, make sure the glass is rinsed with fresh water several times – there should be no smell of rubbing alcohol once this step is completed. If applicable, don’t forget to refill your fresh glass with water; nobody likes a dry rip!

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