Iron will sadden or darken colors, bringing out green shades. Iron powder can be used alone as a mordant, a reducing agent, a color shifter and to increase lightfastness when used in combination with other natural dyes.
- Alternative Names: Iron, Ferrous sulphate heptahydrate, Copperas
- Function: Mordant
- Typical Use Rate: 0.5 oz. per pound of fiber
- Package Size: 4 oz.