Below is a list of which paints to use on various types of plastics and other materials. Essentially, enamel paints are more durable than acrylics but enamels also react with certain types of plastics.
Enamels and acrylics require different clean-up methods too. See cleaning brushes to learn more.
There are many brands of enamel and acrylic paints. Every experienced customizer has a favorite paint, but few seem to agree on which brand is best.
PVC Plastics (arms, legs, heads, and weapons):
1) Acrylics are safe but not very durable
2) Acrylic enamels are safe and more durable
3) Enamels usually don't dry, unless sealed by Testors Dullcote
Styrene Plastics (torsos and pelvis):
1) Acrylics are safe but not very durable
2) Acrylic enamels are safe and more durable
3) Enamels seem safe
Polymer Clays
1) Acrylics are safe but not very durable
2) Acrylic enamels are safe and more durable
3) Enamels seem safe
For Model Magic
1) Acrylics are safe and fairly durable
2) Acrylic enamels are safe and more durable
3) Enamels have not yet been tested
4) Structural Paint is safe and durable