Review (2/5): Great for stripping paint. Not for masking.
The first and only thing that I like about the product is that this mask is thick and easy to spread. The viscosity of this is light years better than Vallejo and it wont just run into areas you don't want. Unfortunately that's all the good points. I put some on a scale model before I painted. When I went to remove it, it basically peeled up every layer of paint under it, including the primer underneath - right down to the bare plastic. It did this for every part I put it on. Do not use if you want to put it over any paint. It was also impossible to peel up in thin layers. I basically had to sand it off the parts I couldnt peel off so I could repaint the entire piece - which I now have to do because this thing ruined my paint job.
Avoid at all costs.