Get Rainbow Henna Hair Color Reviews Pics. I was afraid my hair would turn brassy and red since henna is usually made to color hair red but i was pleasantly surprised there were absolutely no unwanted red or orange tones. The essential oils will strip the henna.
(the result is a chemical reaction that.
Medically reviewed by cynthia cobb, dnp, aprn but if your hair is toward the darker end of the color scale, rainbow shades aren't likely to show up without. If you're a little nervous about taking the plunge with permanent hair color, either because of the chemicals or because you may change your mind in. And the second most valid and pertinent reason is safety. Hair henna is becoming more and more popular as a natural alternative to chemical dyes.