Fake Blood that will never dry?

[Rusty85]

Hey guys I need some fake blood to put inside my Demon Knight key and I want something that will won't dry up inside. I'm not too knowledgeable on the different types of fake blood so I wanted to ask what I could use that would look realistic and wouldn't dry up over time. Anyone know of anything?

 

[Malphas]

I got some stuff just from walmart on Halloween from the maker Fun World. A couple years later it still flows in the bottle and never got crusty or anything.

 

[Rusty85]

Great! You wouldn't happen to have a name would you? I saw this stuff it seems like it'd work pretty well. Bottle of Blood 1 Pint

 

[BornKilr]

I would think most of the stage bloods would work, provided the key has an airtight seal. I have a few bottles that are 5-10 years old in the bottle and are still fine. Otherwise, you may want to make some using castor oil as a base. I've seen instructions online in the past.