Potassium alum
Mordants, Natural dyes and mordants
Potassium alum
Alum natural mordant for better dye adhesion; finely pre‑milled for immediate use.
1 in stock
€1.30 / 100g
1 in stock
Alum is a hydrated double salt and is often used as a mordant when dyeing with natural dyes. Alum was already used by the Romans. It ensures better adhesion of precious dyes to textiles. Our alum is finely pre-milled, therefore it can be used immediately when you start dyeing.
