I will give you one example on how to use gum arabic in watercolor painting. It slows down the drying period of the paint and allows you to work with the paint
Preserving Soft-Edged Highlights in Watercolor with a Gum Arabic Resist
Gum Arabic Watercolor (use THIS for Watercolor Reflections!)
Help! My watercolour paper dries too fast when I work wet on wet. — Louise De Masi Watercolour Artist
Gum Arabic vs Masking Fluid
Chris Campbell Watercolors: GUM ARABIC, GLYCERINE, & HONEY
Gum Arabic as a resist Winsor & Newton Masterclass
En plein air: using Gum Arabic to slow the drying time of watercolour
Painting Watercolors- Gum Arabic vs. Lifting Preparation
Gum Arabic Resin. Gum Acacia for Watercolor Paint. Food Grade. Thickener, Stabilizer, Emulsifier& Binder. Origin Kordofani , Sudan.
Making Media for Handmade Watercolors