The Holbein Iridescent Watercolor Medium is an artist-grade medium is designed to facilitate iridescent (pearlescent) effects when used with water based media including watercolor, acrylic, gouache and acryla gouache. Available in 60ml Squeeze bottle.
Holbein Gum Arabic is used to bind loose pigments for watercolor. It is also used as a medium for preserving luminosity and slowing paints’ drying time, allowing for slightly more control over washes.