Acid dyes are anionic (negatively charged) and, when added to hot, acidic water, form a strong ionic bond with the cationic (positively charged) amino groups in protein fibers.
Do not use dyeing pots or utensils for food preparation.
Do not stir wool vigorously while hot to prevent felting.
Stir gently for 30–45 minutes until the water is clear (this indicates all dye has attached).
Powdered dyes (e.g., Jacquard or Dharma Acid Dyes). Acid Agent: White vinegar or citric acid.