I had my family use this to make a head cast of me and it worked great. It's pretty thick and because of that it's a little difficult to mix, but the vibrant colors make it very easy to tell when the two parts are mixed thoroughly. The stuff sets up pretty quickly so we ended up having 3 people mixing and applying the silicone simultaneously. The silicone has a good bit of stretch to it when it's cured and it's very tear resistant. I never figured out why, but something about the bald cap I used reacted with the silicone and kept it from curing completely, so that is something to watch out for. I've poured up plaster and resin in it and both worked fine.