Add in half a teaspoon of dye powder (navy and fuschia were used in the two containers) and stir it together. Then quickly brush it on the soda ash soaked fabric using a foam brush.
She placed a foam placemat on as the resist item along with a few leaves from a nearby blueberry bush and let it sit in direct sunlight until the fabric was dry.
After batching (sitting) for 24 hours, the items were rinsed and washed with Synthrapol soap to remove the excess dye. As you can see, the results were less than stellar.
So, what about homemade soy milk do you think makes the procion dye work as a solar resist? The article states that “soy milk binds the pigments to the fabric”. It appears that the dye in this experiment bonded to the fabric just fine, it just didn’t give the solar resist we were seeking. The answer probably lies somewhere in the field of chemistry but we are off to try new experiments…