Wonky Weaver™ Copper Sulphate is a Dye Assist and is usually used to change the colour of a natural dye either as a pre-mordant or post-dyeing colour adjuster. It changes dull colours like yellow into green, and pinks will turn purple.
Copper sulphate is gentler on protein-based fibres than ferrous sulphate.
Recommended use is between 2 and 4% Weight of Fibre.
This is supplied in a 25g pack
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