I am supposed to be doing all sorts of admin jobs at the moment but needed a break so I am playing with Thioux or as my packet says Spectralite. I have some as it is an ingredient of Indigo vats. But I had never used it to discharge. I have now and I am surprised that I have any black cloth left. I love the effect!!
Have a go – very easy – 1 part Spectralite to 4 parts soda ash and heat up til almost boiling and throw in the scrunched up and bound fabric. Take it out before you think is discharged as it looks only part discharged when it is actually ready.