I'm currently working on this effect and am having trouble getting the chemical components to interact in order to produce the desired outcome.
Here's my question. Does potassium permanganate or glycerin have a shelf life? Are they subject to spoilage?
I obtained these two chemicals about two-three years ago and have had them sealed in plastic bottles.
After about a dozen attempts it's worked only once. All the other times there's just a mess in the glass that has to be cleaned before the next try.
Any suggestions would be appreciated.