Gum Arabic Paste — Holbein Gum Arabic Paste results in an impasto effect when mixed with watercolors. 15 ml tube.

Gum Arabic Medium — This is an artist-grade medium that enhances gloss and transparency when mixed with watercolors. Mixing Gum Arabic Medium with opaque colors such as gouache and poster colors also increases transparency. 55 ml bottle.

Iridescent Medium — This artist-grade medium is designed to facilitate iridescent and pearlescent effects when used with waterbased media. 55 ml bottle.

Ox Gall Medium — Holbein Ox Gall Medium is an artist-grade wetting agent that improves flow and enhances wet-into-wet techniques when mixed with watercolors. It also improves the acceptance of watercolor paints on paper, particularly hard-sized papers. 55 ml bottle.

Sizing Liquid — Holbein Sizing Liquid is an artist-grade sizing liquid used to reduce the absorbency of paper. Dilute it with warm water and apply it with a broad brush. 55 ml bottle.

Watercolor Medium — When mixed with watercolors, Holbein Watercolor Medium facilitates fine line and stroke development by improving flow. 55 ml bottle.