Pebeo Colorex watercolour ink is a reference for all professional illustrators and designers who appreciate its light, velvet finish and its perfectly uniform flat colour. Highly concentrated, Colorex watercolour ink withstands heavy dilution with water. It can be used pure or diluted according to the intensity required. Colorex White, which is completely opaque, allows lightening of the different shades, thus extending the range into pastel tones. Heavy weight paper is recommended when using these inks. Any paper under a weight of 180 g wrinkles easily when wet.