I love henna. I love the culture behind it, I love the smell (weird, I know), I love that it is plant based, and I love the designs. The only problem I have found is that no matter what I do, it always turns out a sort of light orange color on my half Asian skin. Basically it looks like I took orange highlighter and colored all over my hands... I have tried making it from scratch and tried using the pre-made kinds. I have also tried doing the lemon trick, and even left it on longer than the hours suggested. No luck.
I also died my hair once with henna when I was in middle school. It was perfect for the young teenager in me. I got to feel rebellious without having to be completely stuck with the color forever. Henna washes out after about a month or two