These are rather interesting colorants in that they can work both as a pigment and as a dye. If mixed into a transparent medium like the Smooth Cast 325, they will remain transparent, if mixed into an opaque medium like our InstaCast, they act like a pigment and have a very strong tint strength. Use sparingly as a little goes a long way. Not for use in water borne media.
More Prop 65 Info
More Prop 65 Info