When paired with the emulsion left from a regular cyanotype, the tannins in these three substances can tone your prints into a variety of new colors.
Cyanotype Saturdays
How to Cyanotype Print On Textiles with Film Negatives
…Using the sun, or your UV light, it is now time to print onto your textiles. Make sure not to expose the fabric until you are absolutely ready. The fabric can be exposed to light, just as long as it is not UV light such as sunlight…