So glad that at least it was a test strip and not the full head (since she wasn't that happy). an hour to leave it on is not really long enough as usually you'd leave in any herbal hair dye treatment for at least 3-4 hours. I personally don't feel katam needs to sit out for 9 hrs but sometimes people do leave it out for 12 hours, I have heard, and I think they've had no problems. but to me, the katam can be treated like indigo, as far as dye release goes.
Mix katam and let it sit seperately from the henna, for about 15--20 mins and then mix with the henna and then use. make sure the liquid you are using is warm as well.
I hope this helps!
Just to clarify too what color did she want? Like a reddish-brown?
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