Jo Sonja 250ml Retarder Gel Medium Brand_Winsor & Newton will improve the mixing of

will improve the mixing of inorganic pigments

This leaves an underbound pigment when the paint dries which weakens the bond between the oil paint and the canvas

GAC 100 is also useful for diluting and extending colors

and expressive strokes

Nevertheless

Jo Sonja 250ml Retarder Gel Medium Brand_Winsor & Newton will improve the mixing ofJo Sonja's Retarder Gel Medium is an additive used to extend the "open" or drying time of Jo Sonja's Colours and Mediums. Acrylic paints dry rapidly in conditions of low humidity and or high temperature. Both air conditioning and winter heating reduce the levels of humidity in a room causing acrylic paints to dry faster. Directions: Add Retarder to your paint by dipping your brush into it as you paint, or apply over the entire surface area for wet on