Brigham Humidor Solution offers you the ability to know your cigars are getting just the right humidity they need to stay fresh.  This amazing process is a result of the hygroscopic properties of the Propylene Glycol and pure water Solution. The Propylene Glycol will force moisture, in the form of humidity, into the atmosphere until 70% humidity is achieved.  If the humidity is above 70%, the solution will remove moisture from the air until the relative humidity has stabilized.