I LOVE Nupur henna! It's the only strengthening treatment I use on my protein-sensitive hair. It's much more moisturizing than regular henna. It colors hair as well, but since my hair is so dark I don't know if it colors as richly as pure henna on its lonesome.
Yes, you can add hibiscus, rose hips, rooibos, or any other reddish hued tea to intensify the color, however if your hair is very dark you may only end up with highlights in the sun. You can try doing multiple treatments about two weeks apart from one another to intensify the color.
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Last edited by *Muffin*; 07-14-2012 at 09:06 PM.