Brands - W&N : Watercolour - Liquitex : Mediums
Liquitex : Professional Gloss Medium
Extends your colour without affecting acrylic stability
From £16.30
Liquitex : Professional Gel Medium
Lightweight, non-toxic and dries clear to translucent
From £16.30
Winsor & Newton : Watercolour Marker
Unrivalled permanence and lightfastness, far superior to dye-based equivalents
From £4.30