The king of blues and until the early 20 century the only blue, but still the only natural blue that will withstand any considerable amount of time. This dye has been being used dating as far back as 2000 BC, found in mummies tombs in Egypt it was highly prized and used regularly as is today yet many people would not realize there wardrobe contains at least a couple of garments and the process has remained the same since these ancient times.
3 plastic 1 litre jugs
1 2 litre jug
1 10 litre bucket
30g soda ash
20 g sodium hydroxide
30 g indigo vat grains
DO THE SAME PROCESS WITH THE SODA ASH AND ADD TO 10L
LEAVE TO SETTLE FOR 20 - 30 MINUTES
Step 9: NEXT STAGE
n.b this mix will give a mid to dark (see pic) indigo blue if you want a stronger shade you need to up the quantity of indigo grains keeping the other ingredients the same quantity. Likewise if you like a duck egg blue the amount of indigo vat grains you would need would be less, approx 5gm. experimentation will guide you.
it is important to stress that despite quantity of indigo in vat you must always dip at least 5 times to get a lasting colour, the Japanese start at 25 dips!!
Enjoy your time with this wonderful dye and process!