Instructions
Wrap the doll's head carefully in a cotton cloth or microfiber cloth. Wrapping the head securely will protect it from rattling against the sides and bottom of the glass jar.
Choose a glass jar that is slightly larger than the diameter of the doll's head. You'll want to be able to safely get the head in and out of the jar without banging it on the lip.
Place the wrapped doll head in the bottom of the jar and seal the lid. Set the jar in a location in which it will be safe from being knocked over and keep it out of direct sunlight. Store the jar in a location that has neutral temperature and humidity; don't keep the jar in the attic or basement.