You can use Ancient Sunrise to dye lightened hair; you can lighten hair hennaed with Ancient Sunrise. Because Ancient Sunrise henna is laboratory tested to ensure that it is high quality and absolutely pure, it is possible to do things that cannot be done with compound henna dye. The residues of metallic oxides in compound hennas have a highly destructive chemical reaction with the activators in oxidative hair dyes. Most hairdressers have been warned to “never dye over henna because the hair may be destroyed.” This is indeed the case with compound hennas. Because the ingredients in many packages of henna are not disclosed, the client and stylist will not know what’s lurking in the hair ready to cause mayhem.
Hair lightener can be applied before and after Ancient Sunrise henna. A person with dark brown or black hair can lighten their hair; henna their hair, and then regularly alternate highlights with Ancient Sunrise henna to soften the black root line.
Read more: https://www.mehandi.com/v/vspfiles/downloadables/chapt10_lightening-your-hennaed-hair.pdf