ferrous sulfate

ferrous sulfate

$3.00 Sale Save

Ferrous sulfate or iron, is used as a mordant and color modifier. Ferrous sulfate "saddens" or darkens natural dyes when used as an after bath. Used with cellulose fibers and can make protein fibers harsh or brittle if used aggressively. 

Use at 2%-4% WOF, anything greater will damage the fabric.