Brush your mixed solution onto paper, fabric, or wood, let it dry in darkness, then arrange objects on the surface and expose to sunlight. Where light hits, the chemistry oxidizes and turns deep blue; shadows remain white.

The process handles everything from botanical contact prints to high-resolution photographic negatives printed on transparency film. Fabric artists create one-of-a-kind textiles by exposing treated cloth under ferns or lace. Photographers translate digital images into tangible blue prints with remarkable detail retention. Mixed media artists layer cyanotypes into collages or paint over them selectively.

Jacquard packages this as dry powder that you mix fresh before use, ensuring maximum potency. Work under incandescent or LED light during coating and drying; fluorescent bulbs contain enough UV to fog your sensitized surface. Once exposed and rinsed, your prints are permanent and lightfast. The chemistry is forgiving enough for classroom projects yet precise enough for serious photographic work.