Permanent, colorfast, and very washable. You can easily create a palette of brilliant colors ranging from light pastels to deep, vibrant hues. Perfect for all natural fibers--cotton, rayon, linen, silk, wool, paper, reeds, and wood. These will not dye s ynthetics. Use for tie-dye, vat dyeing, batik, airbrush, hand painting, printing, spatter-painting, and more. This concentrated dye, which you add to tap water, gives you brilliant color. 2/3 oz. jars. Generally, use 1 tbsp. of dye per 1 pound of fabric (three to six square yards or three T-shirts). Keep dyes in a closed container in a cool, dry place and they will remain usable for several years. These chemicals used in the dyeing process are sold separately: Soda Ash Dye Fixer Urea , a humectant Sod ium Alginate , a thickener Synthrapol , a mild soap