Our exclusive water crystal air fresheners are specially formulated gel crystals which are capable of holding 400 times their weight in water. After hydrating with distilled water, they are colored with a non-toxic liquid dye and scented with one of our popular fragrance oils. The crystal clear 8 oz. PET jar is sealed with a lid with daisy holes for display and scent diffusion. Simply remove the spillage prevention disk, replace the lid, and you are ready to enjoy your beautiful scented air freshener that enhances the decor of your room. The crystals can also be displayed in an open glass dish or used in an oil warmer for a stronger scent. As crystals dehydrate, add small amounts of water and stir to wake up the scent. Total life should be about three months, depending on breeze currents and temperature of environment. They make perfect wedding favors, gifts, or baby shower favors.