Fustic Extract - An extract prepared from the heartwood of a tree from the Mulberry family – Chlorophora tinctoria. Fustic produces a range of colors from daffodil yellow to deep gold to orange and makes a good underdye with indigo to make forest greens and teals. While fustic is available in wood chips, its most common form is in a liquid concentrate.
The extract is highly concentrated and ready to use directly into the dye bath. Fustic has a high light and washfastness although exposure to strong sunlight may cause colours to become darker. Fustic liquid extract can be added to the dyebath directly at between 4-6% wof for a medium depth of shade.