This essential mix of humidor solution is excellent if you're seasoning or maintaining your humidor during the summer/seasonal months or living in a mild non-dry climate. • Note: During winter months or if you live in a dry climate - we recommend purchasing our Klaro Yearly Membership, which comes with a yearly supply of the seasoning essentials for your Klaro humidor, including Winter + Dry Climate Humidor Solution, Normal Humidor Solution, refill Gel Solution Packs, and a battery for your hygrometer. • Regulates humidor humidity between 65-72% - The propylene glycol and distilled water mix helps regulate your humidor to your desired humidity level. It's simple, just add more solution to increase the humidity. • Food grade - our formula uses food-grade distilled water and propylene glycol that doesn't harm your cigars. • 250ml Solution Bottle - A must-have for any serious cigar smoker that wants to keep their cigars seasoned.