How beeswax differs from other candle waxes, and how to tell if it is pure

Beeswax melts higher than soy container wax and most paraffins, at 61 to 66°C (about 142 to 151°F) and most commonly 62 to 65°C, according to FAO, so it stands up well as a pillar or taper and drips little when the wick suits the diameter. It is also variable: color, smell and cleanliness depend on how the beekeeper rendered it, and it can be adulterated with paraffin or other waxes. This page sets out beeswax's measured properties, why it is harder to wick than other waxes, how rendering and filtering affect it, the purity tests you can do at home and the ones that need a lab, and what to ask a beekeeper before you buy.

Beeswax by the numbers

All figures in this table are from FAO's chapter on wax, which draws on pharmacopoeia specifications [1].

FAO also notes that prolonged heating changes beeswax: held at 100°C for 24 hours, its ester to acid ratio moves outside the limits for pure beeswax [1]. Overheating genuine beeswax can therefore make it fail a purity test, on top of the fire risk. Wax fire safety is on what to do if wax catches fire.

Why beeswax is harder to wick

Suppliers treat beeswax as a thick fuel for a wick to draw. Supplies for Candles notes, in its wooden wick sizing notes, that adding a small amount of beeswax to a blend "can increase viscosity" [2], and a more viscous melted wax travels up a wick more slowly (CandleScience makes the same point in reverse about a low-viscosity blend that needs a smaller wick than soy [5]). In practice, suppliers point beeswax makers toward particular wick constructions and toward testing several sizes:

• CandleScience recommends its ECO series (a flat cotton wick braided with paper threads) for beeswax, says beeswax is hard to predict, and suggests buying several sizes to test [3].
• NI Candle Supplies recommends square braided cotton wicks for beeswax, saying they handle the wax's density [4].

None of the sources cited here gives a rule for how much larger a beeswax wick should be than a paraffin wick in the same diameter. Start with the wick maker's chart column for beeswax where one exists, test that size and one either side, and judge by the melt pool and the drip. FAO's observation is the target: a beeswax candle is less likely to drip "if wick size is correctly proportioned with respect to the diameter of the candle" [1]. The test method is on how to size a wick.

Color, smell and how rendering changes them

Fresh comb wax is white and darkens with use in the hive; rendered but untreated beeswax comes in "varying shades of yellow," and FAO states plainly that "pure white beeswax on the market has always been bleached" [1]. Bleaching removes at least the aromatic compounds, so white beeswax smells less of honey than yellow wax.

FAO's rendering advice explains most of the faults you will see in raw blocks [1]:

• Process in water or a water bath. Never in unprotected steel, iron or copper containers, which discolor the wax. If you have only hard water, FAO suggests adding 0.1 percent vinegar.
• Scrape the grey layer. A grey layer at the bottom of a poorly cleaned cake is mostly debris. Scrape it off before melting the block for candles, because debris in the wax can clog a wick.
• Let new wax dry. Newly cleaned wax can hold up to 20 percent water by weight. Storing it for a few weeks lets much of that water escape.

FAO lists solar melters, boiling in water and filtering, and steam or hot water presses as rendering methods [1].

Bloom is normal

Beeswax slowly crystallizes and hardens in storage, and a white bloom can appear on the surface. FAO describes this as reversible: the bloom is wax crystals and "reverts to normal wax when melted" [1]. Bloom on its own is therefore no evidence of adulteration.

Testing purity, from simple checks to the lab

Beeswax can be cut with paraffin, stearic acid or other waxes, sometimes knowingly by a seller and sometimes by accident when wax is mixed. FAO describes these tests [1].

1. Melting point. Heat a small sample slowly and note the temperature at which liquid wax first appears. Pure beeswax should fall within FAO's 61 to 66°C, and most samples within 62 to 65°C. A result in range does not prove purity, but a result well outside it is a strong warning. Use a thermometer you trust and heat gently in a water bath.
2. Saponification cloud point. In this chemistry test, wax is saponified (turned into soap with an alkali) and the solution is cooled while you watch for clouding. FAO states that if the solution becomes clear at or below 65°C, the wax is probably unadulterated with paraffin. The test detects more than 1 percent of a high-melting paraffin (80 to 85°C) or more than 6 percent of a low-melting paraffin (50 to 55°C). It does not detect carnauba wax. This is a lab bench test; do it only if you have the training and equipment.
3. Gas-liquid chromatography (GLC). A laboratory method that can detect the free alcohol in carnauba wax and, per a study FAO cites, about 1 percent of petroleum hydrocarbons from low-melting paraffins, though not low levels of high-melting paraffins.
4. Ester and acid values. Laboratory titrations compared against the pharmacopoeia ranges in the table above.

For a hobby candle, the melting point check and a reliable supplier are enough. If you sell candles labeled "pure beeswax" or "100% beeswax," ask your supplier for the test results behind that statement, or have a lot tested, and keep the result with your batch records. What you may print is covered on what you can claim about your candle.

Buying beeswax from a beekeeper

Local beekeepers are a good source, and the wax will vary from batch to batch. Before you buy, ask:

• How was it rendered? In water, and in what kind of container? (Steel, iron and copper discolor it [1].)
• Was it filtered, and how finely? Candle wax needs to be clean enough not to clog a wick.
• Is it cappings wax or old brood comb? New comb is white and darkens with use in the hive, and FAO suggests soaking older brood combs for up to two days before rendering [1].
• Was anything added, or was it mixed with other wax?
• How was it stored? FAO says to store wax in a cool, dry place and never in a room with pesticides [1].

Buy one block, check its melting point and pour a test candle before buying a season's supply. Treat each new lot as a new wax for wicking. A directory of established wax suppliers is on the suppliers page.

From beeswax to beeswax candles

Rolled sheet candles, poured beeswax pillars and dipped tapers each have their own method, pour temperatures and wick choices, and those are on making beeswax candles. If you are comparing beeswax with other waxes before committing, the table on choosing a candle wax sets it beside soy, paraffin and blends.

References

1. Food and Agriculture Organization of the United Nations (FAO), Value-added products from beekeeping, chapter 4: Wax, undated, read October 22, 2026. https://www.fao.org/4/W0076e/w0076e12.htm
2. Supplies for Candles, Wooden Wick (category page with size chart and notes), undated, read October 22, 2026. https://www.suppliesforcandles.co.uk/product-category/candle-wicks/wooden-wick/
3. CandleScience, Candle Wick (wick series descriptions), read October 22, 2026. https://www.candlescience.com/candle-wick
4. NI Candle Supplies, The Only Candle Wick Guide You'll Ever Need, June 24, 2025, updated September 17, 2026. https://www.nicandlesupplies.com/blogs/how-to-guides/the-only-candle-wick-guide-youll-ever-need
5. CandleScience, Lab Notes: CandleScience Coconut Apricot Wax, undated (images dated April 2024), read October 22, 2026. https://candlescience.com/lab-notes-candlescience-coconut-apricot-wax