After some time after opening, it would be hard to handle Ajitsuke nori which sticks together or becomes sticky when holding it due to seasonings leaking out after absorbing humidity.
また、開封後しばらくすると湿気を吸って溶け出した調味料により、海苔同士が張り付く、取り上げる際に調味料が手に付くなど扱いにくくなる｡