Boveda Humidity Regulators – Precision Curing & Long-Term Storage
Boveda Humidity Regulators are the trusted global standard for curing and preserving herbs, spices, teas, flowers, and dried produce. Using patented two-way humidity control, they actively add or remove moisture to maintain a stable environment inside your storage container. This ensures your harvest stays fresh, aromatic, and properly cured without the risk of overdrying or mould.
Key Benefits
- Two-way humidity control; balances the environment by adding or absorbing moisture as needed
- Available in 58% or 62% RH; 58% for a drier finish, 62% for maximum flavour and aroma preservation
- Multiple sizes; 4g, 8g, and 67g packs to suit jars, tubs, and bulk containers
- Protects quality; helps retain natural oils, terpenes, and aromatics during curing and storage
- No maintenance required; unlike sponges or gels, Boveda packs never need refilling or rehydration
The Science Behind Boveda
Boveda packs use a patented two-way osmosis membrane filled with a natural salt solution and pure water. When the relative humidity (RH) inside a container is too low, water vapour is released from the pack. If the RH climbs too high, the pack absorbs excess moisture back in. This dynamic process stabilises the environment at the exact RH percentage stated on the pack, ensuring optimal humidity levels with precise water vapour management.
By holding humidity steady, Boveda provides precise humidity control to prevent the loss of essential oils and volatile compounds that give herbs and spices their flavour and aroma. At the same time, it stops excess moisture from creating mould or spoilage. This simple but precise control is why Boveda is used worldwide for curing and storing valuable produce.
Why Proper Curing Matters
Freshly dried herbs and botanicals often contain uneven levels of moisture. If stored without humidity regulation, this can lead to overdrying, where delicate oils and aromas evaporate, or to uneven curing, where inner material remains damp and at risk of mould. A Boveda Humidity Regulator ensures moisture is evenly distributed throughout the material, allowing it to cure gradually and consistently. The result is smoother, more flavourful, and longer-lasting herbs.
How to Use
- Select your RH level: Use 58% for a slightly drier finish, or 62% for a more aromatic, flavour-preserving cure.
- Match pack size to storage: 4g regulates up to 15g of material; 8g up to 30g; 67g up to 450g or bulk jars.
- Place in your container: Simply insert the Boveda pack alongside your herbs, spices, or dried produce.
- Replace when hardened: When the pack becomes dry and rigid, it’s spent — just swap it for a fresh one.
How They Work in Practice
- During curing: Boveda equalises moisture from the centre of your produce to the outside, ensuring even drying without losing quality.
- During storage: They keep your jars or containers at the perfect humidity for months, protecting against both overdrying and excess moisture.
- Under UK conditions: With central heating, variable seasons, and fluctuating humidity, Boveda gives peace of mind by maintaining a steady environment all year round.
Tech Specs
- Options: 58% RH or 62% RH
- Sizes: 4g, 8g, and 67g
- Type: Two-way humidity control pack
- Use Life: 2–6 months depending on container seal and frequency of opening
- Safe: Non-toxic, food-grade, and made from natural salts and purified water
Top Tip: Use one 8g Boveda pack per ounce (28g) of stored herbs for best results. For larger containers, scale up to the 67g packs. Always keep packs sealed in an airtight environment for maximum lifespan.