Manufacturers description:
Acid dyes are suitable for wool, mohair, and nylon....and some silks...
Acid dyes are used in a process similar to the old union dyes. A dye solution is prepared by measuring the dry powder and dissolving it in boiling water. Setting it with white vinegar. The material to be dyed should be soaked in a mild Ivory dish detergent solution for a few minutes. Water softener is useful if your water is particularly “hard”.
Acid dyes are great for wool fabric and yarn."
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Content of each envelope weighs approximately 1/3 Oz/ 10 gm and theoretically will dye one pound of white cotton full described colour value.
Please contact for multiples so that shipping can be adjusted in your favour.