Gamblin Galkyd MediumGamblin Galkyd Medium is an alkyd resin painting medium that increases the fluidity of oil colours and speeds up their drying time (thin layers will dry within 24 hours). This mediums viscosity is similar to traditional painting mediums made from linseed stand oil. Galkyd Medium levels brush strokes, creates a strong flexible paint film, and leaves an enamel-like glossy finish.Gamblin Galkyd has a high viscosity and when used in greater proportions to oil colour creates an enamel like quality with minimal visible brush strokes. Gamblin Galkyd can be thinned with Gamsol to create thin (low viscosity) glaze layers (a glaze layer should contain at least 10% oil colour). Gambin Galkyd mixed with Gamsol at 1:1 ratio also makes a great medium for oiling out a painting to unify the surface quality and saturate the colours between layers. Gamblin Galkyd has a fast drying time of approximately 24 hours, depending on weather conditions and humidity levels.speeds drying timeincreases fluidityincreases transparency and glosslevels brushstrokes