Highly prized worldwide since antiquity, aluminum potassium sulfate is the premier mordanting material for protein fibers such as silk and wool.
So what does this wondrous substance look like? Aluminum potassium sulfate is refined from bauxite and is a transparent, free flowing crystal, resembling salt. This is a food grade aluminum potassium sulfate that is free of iron and other impurities.
We use USPS for most of our shipping and currently ship to US addresses only.
Physical items will contribute to the dollar amount needed for free shipping (currently $150).
Bulky and odd-shaped items will always incur shipping charges.
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