Boveda 58% is a mixture of potassium citrate and acetate. When the ambient humidity is higher, it draws water. When the ambient humidity is lower, it releases the water. The casing is a unique material that works in a similar way to reverse osmosis. It can both take in and release water molecules while the salt stays in and the impurities stay out. Thus, Boveda products are able to perfectly hold and bi-directionally regulate the constant humidity in a closed container. This Boveda 58%, 8 g bag will ensure an optimum constant moisture of 58 % for approximately 30 grams of well-dried herbs in a closed container for 3 to 4 months. Before use, remove only the plastic wrapping, place the bag in the container with the herbs and seal as tightly as possible. Caution, Boveda is not for drying damp, unripe herbs. Benefits of bidirectional moisture control with Boveda 58%, 8g maintains optimum humidity in a closed container in both directions eliminates the risk of over-drying and weight loss of dried herbs Protects herbs from high humidity and fungi or diseases maintains maximum plant substances in the herb, e.g. essential oils, terpenes or cannabinoids ideal humidity promotes the maintenance of optimal structure prevents damage to important plant components such as trichomes easy to use contains FDA food grade potassium citrate and acetate medium Boveda products are easy to use. Simply remove the protective plastic wrap and place the bag in the container and seal. When the bag is exhausted, the gel contents harden. Simply replace with a new one. The durability of Boveda bags depends on several factors. The lifespan is mainly shortened if the herbs are not dried properly, either too little or too much. Durability is also reduced when the container is opened frequently, when the optimal microclimate is disturbed.