Cyanotype refers to a technique invented in the 19th century that makes it possible to obtain blue monochrome photographic prints using coated paper and light. You will only need a little water, sun, a photosensitive chemical solution. The process results in a beautiful positive image cyan-blue print after exposing it to ultraviolet light. Apply a photosensitive solution on A4 paper with a brush, place the flowers on the paper and then plate with a glass, put in the sun for about 10 minutes; remove the glass and flower, rinse the paper with water for about 2 minutes, then leave to dry in the sun. 300gsm. 10 sheets of A4 paper.