Bird's advice? Do any synthetic process first and henna afterward. Most professional salons exclusively offer synthetic hair dyes, so if you're looking to try henna, you'll likely have to do it at ...

Triple-sifted henna ensures that all you’re left with after the filtering process is ... while more indigo will give you a darker color. The Henna Guys 1 Pack Hair Dye: available at Amazon ...

Derived from the leaves of the Lawsonia inermis plant, henna is a widely celebrated natural dye. It imparts ... Henna also conditions the hair, leaving it soft and shiny. Indigo When used in ...

Many of these reactions have led to hospitalizations. Those allergic to PPD are advised to use only 100% henna or indigo dyes for hair coloring but not all brands claiming to be 100% pure are ...