Quick answer: Powdered honey, glucose, molasses and other spray-dried sweeteners are intensely hygroscopic — the amorphous carrier sugars pull moisture and set into a rock at low humidity. A food-grade fiber desiccant sized to the pouch or pail headspace holds the interior below the caking threshold, adsorbing more than 35% of its weight at RH50 with no dust. It is compostable and FDA food-contact certified.
Spray-dried sweeteners are some of the most caking-prone powders a co-packer will ever run. The same amorphous sugar structure that makes them dissolve instantly also makes them grab water aggressively, and once they pass their sticky point they fuse into a solid block.
Why sweetener powders cake so hard
Amorphous sugars have a glass-transition (sticky) point that falls as they pick up moisture. Cross it and the particles surface-soften and weld together — first tacky, then a hard cake. Powdered honey and molasses are worse still because they carry natural sugars and acids that lower that threshold further. Humidity in the headspace is what pushes them over the edge.
Sizing for pouches, pails and bulk
- Retail pouches and jars: a 1–2 g sachet or film card.
- Food-service pails: a 5–10 g sachet.
- Bulk bags: larger sachets placed through the fill.
Fiber pouches are customizable from 1 g to 1,000 g, so one desiccant covers a retail stick and a bulk pail.
Why fiber beats silica here
Deliquescent-grade caking demands capacity. Fiber holds more than 70% of its weight at RH90 versus roughly 30% for silica, so it keeps working when a silica packet has saturated. It is dust-free — important on a pale sweetener — and FDA food-contact grade (21 CFR 175.300), with a compostable sachet.
Frequently asked questions
Can anything stop powdered honey from setting solid? A correctly sized desiccant plus a high-barrier pack keeps headspace humidity below the sticky point through shelf life; the two work together.
Does the desiccant add moisture risk when the pack is opened? A two-way fiber pack buffers rather than dumping moisture, which helps through repeated opening.
Safe for direct food contact? Yes — food-contact grade and dust-free.
Related reading: desiccant for powdered sugar and confectionery, finding your powder caking threshold, and how desiccants extend powder shelf life. Browse the fiber desiccant range.
Fighting a caking sweetener powder?
Tell us your product, pack format and monthly volume. ATMOSIScience will recommend a food-grade fiber desiccant dose and send a free sample.
