That was the IM I mentioned
Sadly I was given some bad advice when comparing products for easy removal. The PAX remover smells better but it does not break down the PAX like IM does. That said I also had no towels and facecloths that I was okay ruining with gummy pax
I don't know if you read the whole thread but there is a lot of info in there about how much we have researched this too.
(Says it was developed for make up before being used for prosthetics)
(good mention of using different ratios for different needs, I use it at about 1: 4 PA to paint if that. Though I really would not be using the remover recipe there!!!! Baby oil and IA also work, slowly but they do work.)
The needs for film are very different to the needs for a convention. At a con you do not have people watching you and able to repair any damage to your make up or indeed reapplying it (I have done film work and know this is a slightly simplistic account but it is true there are many more people per main actor than actors to keep make up and costume looking right through all shooting periods.. and same number for doubles/stunt doubles etc.) You need something that goes on once can be self applied and be self removed.
I personally have tried to get my hands on all sorts of make up that lives up to that but most schools here train for the film type of situation: ie on call restorers of make up/costume and indeed no huge untrained crowds bumping into the model/actor for the make up to transfer to
Also I cannot get hold of certain products thanks to customs laws and lack of importers here.
Airbrushing is great but only if you have another to do the brushing and also are able to transport the equipment or have it in place already. Again not things that are easy for the convention goer.
In short: Ideal, the perfect and only option? No! A good option for the circumstances and generally safe? Yes. But always test and always have cleaner on hand!
Oh and I got some on my clothes. I was very tired and lay down while still painted and it transfered to my clothes. I was able to remove it by washing on a warm cycle and drying with a mix of cool and hot. There were little pills of the stuff at the edge of the dryer so really really do clean the lint out before and after!