Winsor and Newton Artist Acrylic Flow Improver 125ml
Flow Improver works by increasing the surface tension of the water and binding the paint even when it is in a diluted state. Under-bound paint ie. That which is diluted with plain water, can appear blotchy and may become brittle or not adhere to the canvas well. This medium will allow you to apply large areas of flat, even colour and is very effective in techniques involving hard edges, staining and watercolour effects. Flow Improver slightly slows drying and maintains no colour shift from wet to dry when used with Winsor & Newton Artists' Acrylic.