JACQUARD-1/2 ounce acid dyes. Concentrated powdered hot water dyes that produce the most vibrant possible results on protein fibers including silk wool cashmere alpaca feathers and nylon. The only acid involved is the vinegar you add. 1/2 ounce bottle will color up to 2 pounds of fiber depending on the depth of shade. In addition to garment dyeing you can also paint or print with these dyes. Extremely brilliant and colorfast they produce a uniform dye job and the colors are beautiful pure transparent and luscious.