Synthetic Indigo Dye: (for cotton, linen, rayon, silk & wool) Indigo is a vat dye that is one of the oldest classes of dyes known. Until the late 19th century indigo was obtained from plants, the most significant geing Indigofera tinctoria. Experience, patience and a sensitivity for subtle color changes are necessary for successful dyeing. Obtain the darkest blues through a properly reduced vat and repeated dyeing to build color depth. Synthetic Indigo requires a reducing agent, Thiox, and an alkali, Lye. When the fabric is removed from the yellow-green dye vat and begins to oxidize, the subtle changes from yellow-green through blue are captivating.
Pre-Reduced Indigo: You will love working with this! This specially formulated synthetic indigo is already 60% reduced, therefore, it allows you to use soda ash instead of lye in the dye vat. Pre-reduced indigo is not instant indigo. Extremely easy to use, pre-reduced indigo makes setting up an indigo vat almost effortless. There is no need to paste up the indigo granules because they dissolve easily in water.
*While Indigo and the chemicals used are comparatively safe and non-toxic, it is best to treat them all with caution. Wear rubber gloves and a dual cartridge respirator to minimize contact. Always work in a well ventilated area. Good house-keeping is essential to good results. Utensils used for dyeing should never be used for food preparation.