Acrylicos Vallejo Polymer Medium is 100% acrylic medium for blending and glazing for use as glossy permanent varnish and is also employed as a protective and isolating coat before applying removable varnish. Do not use with and on oil paintings. Can be diluted with water. Apply with varnishing brush in thin coats. Keep the brush moist. Dries quickly and water proof. Clean up with soap in water.

reference: www.acrylicosvallejo.com