Looked back thru this forum, even searched the site.  Found quite a bit on freezing henna for hair, but found nothing on freezing pre-made cones.  I imagine a zip-lock type bag would work, is there anything else I need to know?  I use cellophane cones.  If someone has posted on this, I didn't find it!  I have a batch of cones all made, but sure don't want to blow freezing them, they're Rajasthani Twilight!