Integra Boost packs begin working immediately and respond to the environment in which they are introduced. Even so, depending on the base humidity level of your container, it may take a few hours or a couple of days to regulate the environment to the precise relative humidity (RH). For instance, if a container has a base RH of 10 percent, it will take longer to bring it up to 55 percent than a container with a base RH of 40 percent. However, once Integra Boost brings the humidity to an ideal range, it will continue to release and absorb moisture accordingly to maintain it.