Mediumsopen upa cornucopia of textural and visual possibilities.Masking fluid can be used to preserve highlights and linear details by acting as a boundary you peel off afterwards. Iridescent medium infuses the composition with a subtle, luminous sheen. Granulation medium, in particular, enhancesthe natural sedimentation ofpigmentachieving a mottled effect that contrasts with smoother washes and soft blooms.That’sjust three of many more Winsor & Newton mediums to traverse.