This is a gypsum pigment in the form of liquid. You can mix it with another pigments to achieve the desired color. Just add a very small amount to your gypsum project and you can see the result. We recommend not to add a big amount of pigment to your work at one for time,but add it a little bit by a little bit to see the change of shade from light to dark. Can be used with such materials as light metals,plaster,soap,epoxy and urethane resins.