Boveda is the world's most recognized 2-way moisture control agent.
Pure water and natural salt saturators are sold and set to the optimum moisture for each product.
This is a highly moisturizing agent that is highly functional to repetitively absorb and release by absorbing moisture in the air when the humidity is above the inside of the bag, releasing pure water through the reverse osmosis membrane.
Even if unopened, the moisture contained in BOVEDA may change to its freezing or conforming to its state of its current state even if it is not opened.
In that case, warm it with your palm or other similar to it will return to normal (soft) state.
The product's original effectiveness will not be lost.