Tri-Art Retarder Medium 250ml

Tri-Art Retarder is a water based medium designed to slow down the drying time of acrylic colours. Mixed with colours and mediums at up to 15%, it increases open-time and allows for greater manipulation. Retarder is essential in airbrush application. When used in correct proportions with Tri-Art Airbrush Acrylics, it extends the drying time, reduces build up on the airbrush tip and will not alter the integrity of the paint film. It is also effective when used with Tri-Art High Viscosity Acrylics for screen printing, as it will prevent the rapid drying of paint in the screen.