Things You'll Need
Instructions
Boil a pot of water on a stove. Do not heat the water in the microwave or by another means, as the water may get too hot and can damage the doll.
Pour the boiling water into a safe bowl and allow it to sit for up to three minute to cool slightly. Submerge the Barbie head-first in the water until it completely covers her neck joint.
Allow the neck joint to soak for three minutes. Check the neck joint; the vinyl should now be pliable, or easily bent. If you have trouble pinching the vinyl, soak for a few more minutes and try again.
Pinch the doll's neck and pull until the head is removed from the body.
Submerge the neck joint into the warm water for another two to three minutes to soften it again. Snap the replacement head into place.