A Word About Miracle Milk

I recently purchased a bottle of "Miracle Milk" oil that is used by magicians to make fake milk.  I had seen people saying this was great for reborn doll bottles.  Some say that in a plastic bottle it will form a ring around the top of the milk that can not be mixed back up and tends to etch into the bottle.  I am sure this has happened to some but I am not sure if it is all plastic bottles or just some.  I have read reports from other reborn doll collectors that their Miracle Milk held up fine in a plastic bottle.  I have also read that the key to success is to first heat the distilled water before you add the drops of oil.  I heated my milk and placed it in my vintage glass Simlac bottle.  For a while I would shake it every day to mix it as I went by the crib because it did seem to settle some.  Then life got busy and I forgot all about it until today.  It has now been about 4 weeks since I last shook the bottle and today I picked it up to take this photo for you all.  The bottle has NOT been shaken to mix the milk before taking this photo.  I have to say the settling/separation is not bad.  There also does not seem to be a ring of residue sticking to the bottle.  So my feeling is that this product is good to use in a glass bottle.  Perhaps good for some plastic bottles too but I can not tell you which ones.