Interesting article about cleaning beeswax. Great information as to why Grumpy’s uses filtered beeswax.
https://www.foxhoundbeecompany.com/blogs/beeswax/how-to-clean-render-and-filter-bees-wax
Physical and Cosmetic Drawbacks
Debris and Impurities: Bits of cocoons, dirt, and bee parts remain trapped inside.
Uneven Candle Burning: Particles block the wick and cause smoking, sputtering, or uneven melting.
Texture Issues: Gritty particles ruin smooth salves, lotions, and lip balms.
Strong Odor: High amounts of leftover propolis create a pungent, sour, or overly earthy smell rather than a sweet honey aroma. [1]
Purity and Safety Concerns
Trapped Contaminants: Raw wax can hold higher levels of agricultural pesticides or hive treatments.
Allergen Risks: Higher pollen concentrations increase the chance of skin or respiratory irritation for sensitive people. [1, 2, 3]
Unfiltered beeswax is prone to mold growth because it contains trapped moisture, pollen, propolis, and organic debris. Pure, clean beeswax does not support mold, but the trapped impurities in raw, unfiltered wax spoil when exposed to humidity and warmth. [1, 2, 3, 4, 5]
Why Mold Grows on Unfiltered Beeswax
Trapped Water: Water from the rendering or harvesting process gets locked inside the cooling wax block.
Organic Impurities: Leftover bits of bee cocoon, honey, and pollen act as a food source for mold spores.
Storage Environment: Storing wax in damp, dark, or poorly ventilated spaces accelerates fungal growth.
Bloom vs. Real Mold
