Derivan pouring medium is a clear product that when applied to a surface or as a paint additive will automatically spread and create a smooth, glossy finish with minimal surface texture. It is ideal for high gloss thick glazing and poured marbling techniques. apply with a brush, palette knife or jug. Can be tinted with Derivan student acrylics or derivan inks. Can be used, as a high gloss varnish. If pouring, it must go onto a rigid substrate. Use of a brush is recommended when varnishing flexible surfaces to avoid "pulling" due to surface tension of the product.