The Original Terpene Shield The Original Terpene Shield, Boveda precise humidity control packs restore and maintain humidity for herbal medicine by creating a protective monolayer of water molecules over trichomes, so you can #savetheterps. Terpenes, the precious smell you love, are kept safe until ready for use. Simply place a Boveda pack in a container with your herbal medicine and close the lid. It’s that easy. Boveda’s patented formula uses all natural salts and water in its pack to ensure the exact Relative Humidity (RH) needed to maintain freshness. Ideal RH is between 58% and 62% for herbal medicine. Choosing between Boveda 58% RH and 62% RH is a personal preference depending on how you prefer your experience and what the humidity level is where you are. Some consumers choose 58% RH for personal-use products and 62% for larger storage. 58% and 62% RH? Try one of each Boveda to decide. Boveda is available for every container size and stage of storage or transport. Experience for yourself how much better it is with Boveda. Note: Do not mix different Boveda RH levels within the same container. And do not use Boveda in the same container with other humidification products because they will fight against each other and reduce the efficiency of Boveda. Why risk your quality? Just use Boveda for all herbal storage.