These dyes are specifically for dyeing cellulose fibres, such as cotton, linen, bamboo, tencel and rayon.
They are fibre reactive and form a covalent bond with the fibres they are applied to, and are light and wash fast.
They are cold setting dyes and do not require heat to set them, but they do need an alkaline medium (Soda Ash) to set.

Method
Pre-wash the material to remove any sizing before use.

50gms of dye will dye approximately 1kg of dry material at full strength, for lighter colours, use less dye.

Make up a soda ash solution  using 1 cup of Soda Ash to 8 litres of warm water, or using the following measurements.    

60gms       Soda Ash             

1 litre        Warm water 

If you use a bucket with a tight fitting lid, it will keep and can be reused a number of times.

Dissolve the dye powder in a small amount of warm water, then add more water to make up the volume required.

Make up only the amount of dye required for each dye session as these reactive dyes start bonding  with water immediately.

Start with ½ teaspoon in a cup of water and make up more as you need it, rather than make up too much and not use it.

The solution is stable and useable for approx. 2 hours.

After this time, you will get lighter colours, and eventually the solution will become inactive.

 (Although the solution  will still look brightly coloured, it will no longer react with the fibre/material and bond to it). 

The Soda Ash is essential for setting these dyes and they will not set properly without using it.

Applying the Dye

Soak the material to be dyed inthe Soda Ash solution for at least 20 minutes.

Longer is fine, I sometimes leave mine overnight to make sure it’s wetted through fully.

Squeeze out most of the Soda Ash solution so it isn’t dripping wet, then lay out your fibre/yarn/material on plastic wrap and apply the dye solution with squirt bottles or brush, until you are happy with the effect.

Setting the Dye

Wrap the dyed goods in the plastic and allow to stand for several hours.( I usually leave them overnight).

In cold weather, either place them in a warm place, or if it’s very cold, you can steam set them.

Rinsing

Rinse in warm water, then wash in hot soapy water to remove any unfixed dye.

SAFETY ADVICE

Whenever using chemicals and dyes we recommend the use of rubber gloves and dust masks when handlng, and the safe disposal of all unused dye solutions.

If swallowed, do not induce vomiting. Rinse mouth with water, give milk or water to drink.seek medical advice.

Keep all dyes and chemicals out of reach of children.

Do not use food utensils for dyeing.