I am about to henna my hair for the first time.
I bought Hannah natural henna powder and indigo powder. Would you recommend doing a coat of just henna before I mix in the indigo? What should I mix the henna with? The instructions don't say to let the dye release over night, but everything I have read on the Internet says I should let it sit for at least 12 hours. Does anyone have experience with that particular brand of henna? Should I let it sit over night before dying my hair?