Art Spectrum Kaolin is a china clay used for preparing grounds (gesso) and as extenders for gesso and paint. Gesso is used to prep and prime your canvas ready for painting. Gesso makes the surface of your canvas slightly textured and ready to accept acrylic paint.
It is also often added to oil paint to achieve an impasto quality. Impasto is a painting style in which paint is laid on canvas in thick layers creating an almost three-dimensional effect. Take Vincent Van Gogh's very famous 'Starry Night' for example.
