Processing propolis means transforming the sticky, raw resin bees collect into a usable extract, typically a tincture, oil infusion, or water-based solution. The core steps are the same regardless of method: clean the raw propolis, break it down into small pieces, dissolve the beneficial compounds into a solvent, filter out the wax and debris, and store the finished product properly. Each method has trade-offs in potency, ease of use, and what the final product works best for.
Preparing Raw Propolis
Raw propolis straight from the hive is a mix of resin, beeswax, pollen, and debris. Before any extraction, you need to clean it and increase its surface area so the solvent can do its job. Start by freezing the raw propolis for a few hours. Once frozen, it becomes brittle and easy to break apart. Use a mortar and pestle, food processor, or even a hammer inside a bag to grind it into a coarse powder or small chunks. The finer you grind it, the more efficiently your solvent will pull out the active compounds.
If your propolis is especially waxy, washing it with hot water before grinding helps strip away excess wax. This step also removes a meaningful amount of contaminants. Research on wax separation shows it can remove 40% or more of heavy metals like lead, arsenic, cadmium, and chromium from crude propolis. It also strips out a large percentage of pesticide residues, with some pesticides reduced by 65% to 88%, all without major losses in the beneficial plant compounds you’re trying to preserve.
Alcohol Extraction (Tincture)
An alcohol tincture is the most common and effective way to process propolis. Ethanol dissolves the widest range of propolis compounds, including flavonoids, phenolic acids, and aromatic esters that don’t dissolve well in water or oil alone. The alcohol concentration and the ratio of propolis to solvent both matter for the quality of your final product.
A standard ratio is 1 part propolis to 5 parts alcohol by weight. So for 20 grams of ground propolis, you’d use 100 milliliters of ethanol. Some extraction protocols use a 1:3 ratio (like 70 grams propolis to 210 milliliters of alcohol) for a more concentrated product, while others go as dilute as 1:20 for lighter extracts. The alcohol concentration typically ranges from 70% to 95%. A 70% ethanol solution pulls a good balance of both water-soluble and alcohol-soluble compounds. A 95% solution is better at extracting resinous, non-polar compounds but will miss some of the water-soluble ones.
Maceration Process
Combine the ground propolis and alcohol in a glass jar, preferably dark amber or brown to block light. Seal it tightly and store at room temperature. Shake or stir the jar once or twice daily to keep the propolis from settling and to help the solvent penetrate evenly.
There is no single standard maceration time. Published research on propolis extraction notes that maceration periods range anywhere from 1 day to a full year, depending on what compounds you’re targeting and the origin of the propolis. For most home processors, 2 to 3 weeks is a practical sweet spot. Specific flavonoids peak at different times: some reach their highest concentration after just 5 days, while others need 15 to 20 days of soaking. If you’re not testing for specific compounds, 15 days is a reasonable minimum to capture a broad range of beneficial substances.
Water-Based Extraction
If you want to avoid alcohol entirely, water can serve as a solvent, though it extracts a narrower range of compounds. Propolis contains both water-soluble and fat-soluble components, and plain water will only pull out the former. To improve the yield, some methods use mildly alkaline water (around pH 7.5) to break down certain compounds that wouldn’t dissolve otherwise. You can achieve this by adding a tiny amount of baking soda to your water.
Use the same general ratio as an alcohol tincture: roughly 1 part ground propolis to 5 parts water by weight. Heat the mixture gently to around 120°F (50°C) and stir frequently for 30 to 60 minutes. Avoid boiling, which can degrade sensitive compounds. The resulting liquid will be less potent than an alcohol extract, but it’s a practical option for people who can’t tolerate ethanol or who want a water-compatible product for mixing into drinks or sprays.
Oil Infusion Method
Oil-based propolis works well for topical applications like salves, lip balms, and skin treatments. Olive oil and coconut oil are the most common carrier oils. The process uses gentle heat rather than long soaking.
Utah State University Extension recommends a ratio of 10 grams of propolis to about 6.7 fluid ounces of oil. Combine them in a double boiler on a low or medium setting and use a candy thermometer to keep the temperature below 122°F (50°C). Stir continuously for about 10 minutes. The low heat prevents the oil from breaking down while allowing the resinous compounds to infuse into the fat. This method won’t extract as many water-soluble flavonoids as alcohol does, but it captures the lipid-soluble compounds that are most useful for skin applications.
Filtering the Extract
Regardless of your extraction method, the liquid will contain wax particles, plant debris, and other solids that need to come out. Filtering is what turns a murky mixture into a clean, usable product.
For most home processors, a two-stage approach works best. Start with a coarse filter like a fine mesh strainer or cheesecloth to catch the large particles. Then pass the liquid through coffee filters or laboratory-grade filter paper for a cleaner result. Research-grade propolis extracts often use Whatman No. 4 filter paper, which is a medium-porosity paper that catches fine wax particles while letting the dissolved compounds pass through. If you’re making propolis for personal use, unbleached coffee filters are a reasonable substitute.
Alcohol extracts filter more easily than water or oil extracts because ethanol keeps wax dissolved at room temperature. If your tincture is filtering slowly, try warming it slightly (not over an open flame if using alcohol) or letting it sit so larger particles settle before you pour off the top liquid.
Understanding Strength and Potency
The strength of a propolis extract is typically described by its drug-to-extract ratio, or DER. This is simply the weight of raw propolis you started with compared to the weight of the finished liquid. If you used 10 grams of propolis to produce 100 grams of extract, your DER is 1:10. A 1:5 ratio produces a stronger extract than a 1:10.
The actual concentration of active compounds varies enormously. A 2025 analysis of commercial propolis products found total flavonoid content ranging from 0.1 to 174.5 milligrams per milliliter, a nearly 1,750-fold difference between products. Total phenolic content showed a similar spread: 0.1 to 107.5 milligrams per milliliter. This wide variation reflects differences in the botanical source of the propolis, geographic origin, extraction method, and solvent strength. Without laboratory testing, there’s no reliable way to know the exact potency of a home-processed extract. Using consistent ratios, solvent concentrations, and maceration times at least gives you batch-to-batch consistency.
Storage and Shelf Life
Propolis extracts are relatively stable if stored correctly. Light, heat, and oxygen are the three main enemies of the bioactive compounds. Store your finished extract in dark glass bottles (amber or cobalt blue) with tight-fitting lids. Keep them in a cool, dark place. Refrigeration at around 40°F (4°C) is ideal for long-term storage, especially for water-based extracts, which are more prone to microbial growth than alcohol tinctures.
Alcohol-based tinctures have the longest shelf life because ethanol acts as a natural preservative. Stored properly, they can remain stable for several years. Oil infusions are more vulnerable to rancidity and should generally be used within 6 to 12 months, depending on the carrier oil. Water extracts have the shortest window and are best refrigerated and used within a few weeks unless you add a preservative.