Question from Cecilia
Dear Debra, My daughter participated in a Photography class recently and they used a technique called “cyanotype”. In this case I am talking about a t-shirt. Would it be toxic for my daughter to wear a t-shirt with a design made using this technique and this chemicals? Thank you!
Debra’s Answer
This wasn’t hard to find.
Cyanotype is a photographic printing process that gives a cyan-blue print that we know as “blueprints.” The process uses two chemicals:
It’s basically ammonia and iron. The ammonia smells bad in blueprints and is toxic there, but in a t-shirt, once you wash it there should be no ammonia remaining.
I think it’s fine once it’s washed.
