Re: Indigo re-use - not good.

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Posted by Alex ~ Spellstone on November 2, 2004 at 06:02:27:

In reply to: Re: Indigo re-use - not good. posted by Nancy on November 1, 2004 at 09:21:09:

: Is there a demise chart for indigo somewhere?

No I don't think so. I'll put one up on indigo page early next year.

For now it's pretty simple to judge demise by eye, indigo works
differently from henna you just have to understand what's going
on in the mix. The dye in the indigo powder is soluble so when
you mix the powder and water you flush out the dye right away.
When it contacts the air it changes colour to deep blue becoming
in-soluble. Once it's blue it won't dye.

You have to give the water long enough to flush out the soluble
form of the dye but not long enough to oxidise. It's about 10 mins.

Alex

 

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