We recommend a reputable dry cleaner or gown preservationist perform the cleaning. Proper gown management requires periodic access to the material in order to inspect and adjust the garment. Therefore, your gown should be in an easy to open the box, bag or muslin to perform these functions. Proper folding of the gown, using archival buffered or un-buffered tissue is necessary to ensure that major folds are protected. Gowns also need to have good air circulation in order to age evenly and avoid moisture buildup, which can lead to mildew and ruin the gown.
Some companies promote sealed containers as a method of preservation.
Sealing the container makes it difficult or impossible to inspect the garment. Worse yet, plastic windows found in sealed containers often give off gasses that may accelerate gown deterioration. Sealed containers can often trap moisture inside allowing mildew to grow. They also restrict air circulation, which can lead to uneven aging of the gown. Ask that your headpiece be package separately.