Important Care Instructions.
Cyanotypes are photographs, not dyes, and they require extra care in handling.
The image is permanent, but the blue colour will change to yellow if washed with phosphates, soda, borax or bleach. To preserve the original blue colour – hand wash using only a small amount of non-phosphate liquid soap. Rinse thoroughly, and dry flat in the shade. Blueprints can be ironed using a dry iron. Dry cleaning is NOT recommended.
What is Cyanotype?
Cyanotype is one of the oldest photographic printing processes in the history of photography. It was introduced by the astronomer and scientist John Herschel in 1842.
Cyanotype photography is a camera-less technique that involves laying an object on a natural surfaces coated with a light sensitive solution of iron salts before exposing it to UV light and washing with water to create stunning white and Prussian blue images.
The cyanotype is a real collaboration with the natural elements: the sun, the water, the air, and the earth.