The soda ash is the fixative so yarn or fabric added after the soda ash won’t be as vibrant because it hasn’t had the time to be immersed in the dye. The salt opens up the fibers aiding in the saturation of color. For the best, accurate results follow the steps. I have experimenting with reusing dye baths but the results are unpredictable.
Thank you so much for talking about the importance of safety with this process.
You’re welcome!
How long can be the liquid be preserved ? can it be reused ?
The soda ash is the fixative so yarn or fabric added after the soda ash won’t be as vibrant because it hasn’t had the time to be immersed in the dye. The salt opens up the fibers aiding in the saturation of color. For the best, accurate results follow the steps. I have experimenting with reusing dye baths but the results are unpredictable.
Hello, where do you get your dyes from?
Dharma trading, Prochem and jacquard products. They all have Mx fiber reactive dyes.