Acid Dye -
Do not stir wool vigorously while hot to prevent felting.
Do not use dyeing pots or utensils for food preparation.
(low immersion) or doing a solid color (high immersion)? Dyeing yarn or finished fabric ? Working with wool or nylon ? acid dye
Stir gently for 30–45 minutes until the water is clear (this indicates all dye has attached).
Add 1/4 cup of white vinegar or 1 tablespoon of citric acid per pound of fiber. Do not stir wool vigorously while hot to prevent felting
Fill a stainless steel pot with water, add the dye powder, and stir to dissolve.
Add the wet fiber to the pot and gradually raise the temperature to a simmer ( Dyeing yarn or finished fabric
Because acid dyes exhaust so well, you can often add more fiber to the same bath to create lighter shades.