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For artists, it is the traditional binder in watercolor paint and in photography for gum printing, and it is used as a binder in pyrotechnic compositions. Pharmaceutical drugs and cosmetics also use the gum as a binder, emulsifier, and suspending agent or viscosity-increasing agent. [12] Wine makers have used gum arabic as a wine fining agent. [13]
Watercolour paint used in photographic hand-colouring consists of four ingredients: pigments (natural or synthetic), a binder (traditionally arabic gum), additives to improve plasticity (such as glycerine), and a solvent to dilute the paint (i.e. water) that evaporates when the paint dries. The paint is typically applied to prints using a soft ...
One of the qualities for which artists value casein paint is that unlike gouache, it dries to an even consistency, making it ideal for murals. Also, it can visually resemble oil painting more than most other water-based paints, and works well as an underpainting. Casein paint loses its solubility with time and exposure and becomes water-resistant.
Tempera painting was the primary panel painting medium for nearly every painter in the European Medieval and Early renaissance period up to 1500. For example, most surviving panel paintings attributed to Michelangelo are executed in egg tempera, an exception being his Doni Tondo which uses both tempera and oil paint.
Gouache differs from watercolor in that the particles are typically larger, the ratio of pigment to binder is much higher, and an additional white filler such as chalk—a "body"—may be part of the paint. This makes gouache heavier and more opaque than watercolor, and endows it with greater reflective qualities. [2]
An artist working on a watercolor using a round brush Love's Messenger, an 1885 watercolor and tempera by Marie Spartali Stillman. Watercolor (American English) or watercolour (Commonwealth English; see spelling differences), also aquarelle (French:; from Italian diminutive of Latin aqua 'water'), [1] is a painting method [2] in which the paints are made of pigments suspended in a water-based ...