5 DAYS OF TIPS: Cyanotype Toning



Reader, the cyanotype process, allows for much more than just shades of blue . Through toning, you can transform your Cyanotype prints into a wide spectrum of hues, adding new dimensions to your work. Here's how

Step 1: Dry Print for 24 Hours

Before proceeding to bleaching or toning, you'll want to dry your cyanotype print for at least 24 hours. This ensures full oxidation and development of the deep blue iron compounds. Or speed up oxidation by using hydrogen peroxide during the wash bath.

Step 2: Bleaching

The blue color in cyanotype comes from complex iron ferrocyanide. By placing the print in an alkaline environment, you can reduce and break down the iron, so the blue will fade!

TIP Soak the print in water first to soften the paper fibres and allow for better and more even absorption
Dissolve 2 tablespoons of sodium carbonate into a tray of water. A more concentrated bleaching solution will be faster (but too much can damage the print!)
TIP Place the print face down in the bleach solution
Gently move the print around and wait, checking regularly
Once ready, wash the print in water to remove any residual bleach.

Step 3: Toning

Place the washed print in a toning bath. We have a free toning cheat-sheets with toners ideas!
Allow the tannins to react with the iron compounds in the cyanotype and replace them. This can take up to 2-3 hours depending on the strength of the bath.
The blue color will be replaced with beautiful deep earthy tones
TIP Brew tea and coffee in hot water but wait for it cool down completely (hot water can damage the paper fibres)

TIP Both bleach and toning bath can be stored and re-used multiple times. The toning solution will weaken a bit after each use, but teabags can be added as you re-use it.


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