Henna hairdye from the store
I saw this little bag of henna hairdye at my local asian store. It says "black henna" but it has a big "100% natural" label on it.
I checked the ingredients and the only listed ingredient was the henna powder itself.
I really wanna buy it because I don't wanna purchase indigo and henna powder online and it would be very convenient to just buy the henna powder from the store, but I'm really curious because henna on its own can't become black right? And if it had indigo in it wouldn't it be listed?