The technique is very simple - the procion dyes are cold water dyes that fix with soda ash or washing soda and the acid dyes are hot water dyes that need vinegar to fix them. The dyeing can be carried out in either order. The amounts given are for about 100g of fabric - you can dye several pieces at a time by simply increasing the amounts used. You can achieve pale colours by using less dye. Using these dyes is not an exact science - as long as you put put in enough of everything I have never found that there is a problem.

You will need:
Viscose/silk devored scarf or fabric
One acid dye
One procion dye
Soda Ash/Washing Soda
White Vinegar
Household Salt
Bucket
Saucepan
Large Spoon for stirring
Jam Jar for mixing
Teaspoon for measuring
Synthrapol (optional)

Take care when handling dyes and chemicals. Use rubber gloves. Work in a well ventilated area. Do not breathe powders. Do not use implements for food preparation. Using the Procion Dye: dampen the devore in warm water. If you that there might be a finishing in the fabric, wash with a detergent such as Synthrapol. First mix 125ml salt with 1 litre of hot water, and leave until slightly warm. Then mix 3 heaped tablespoons of Soda Ash in 1 litre of hot water (this provides the fixative).

Mix 1 teaspoon of procion dye with a little water, and add to the salt water. Pour the salt and dye mixture into a bucket with 2 litres of cold water or enough to let the devore move freely. Then put the devore into the bucket. Leave for about ten minutes, stirring every few minutes and then add the soda ash mixture. Stir every few minutes for the next twenty minutes, and then every so often for another half hour.

Remove devore from the dye bath and rinse in cold water.