I was wondering if anyone has used garden aluminum sulfate such as the Hi-Yield brand as a mordant for dying. I think the concentration is about 16-17 percent aluminum sulfate.
Is the aluminum sulfate that you buy from say, Dharma trading 100% aluminum sulfate?
I use gardening alum all the time. It will likely have impurities that can shift the colour, so it's hard to get as predictable results as using some from a dye supplier or grocery store, but it works as a mordant.
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