Modification Clear additive mods?

Apoxie sculpt is grey toned, but iirc Milliput is a lot whiter and it's also a 2 part epoxy putty.

I know I've seen people use UV resin but I'm always afraid that the curing process will discolor the surrounding resin... I imagine it would also be a lot more difficult to "sculpt".

 

As someone who has been doing scars as their speciality for 10+ years now...no, they do not rub off. Quite the opposite, once it's cured and the faceup is done they are very sturdy. The blushing around them will be damaged before they even start to lift. I had customers who had to remove my work for a new set years later, and they all told me the scars stayed on until the end of the scrubbing session.

I use wood glue, which is pretty much the same as white crafting glue (they are both PVA based, but wood glue tends to adher stronger and is thicker/less runny).
For burn scars it's applied in several layers:




This guy is scarred all over, back and front, and is owned by two seamstresses. That means he gets regularly dressed up. No scars lost so far:


Like said, the sealant and blushing is the one to go through friction. The scar will very much stay on. Glue has been the go to for over a decade, I think you can trust the community experience there