Because of my allergies - fragrance,chrome, nickel, cobalt - I now use organic shampoo and hadn’t had any color for one year and a half because my scalp was itching with the chemical products. I was so happy to find at least Henna to change my hair color.I just cut my hair so there are no more traces of the bleaching (just 2 cm). I’m medium blond and some hair dressers say I’m ash blond.

The Real Thing:
I mixed Ancient Sunrise henna from www.mehandi.com with a mildly acidic mix. I let it sit till dye release. It was a hot day so in 3 hours i had an orange stain on the paper. I mixed10 grams of Ancient Sunrise indigo and added it to the henna. I put saran wrap on my head and then a towel. Every 15 min i used the hair dryer to warm the towel. I let it sit for 7 hours and rinsed it easily in the shower.

The result is a dark copper with a few auburn highlights. I had a few centimeters of bleached hair left which turned more copper as you can see on the photo. I did one more application three days later and got the color I wanted and the copper highlights were gone.

Notes and References
Chemical hair dye allergy: https://www.tapdancinglizard.com/henna-for-hair-2/ pp. 18-26
Henna: https://www.mehandi.com/Mehandi-com-Ancient-Sunrise-Henna-for-Hair-s/121.htm
Don’t have fruit juice on hand? Keep some fruit acid powders in your cupboard.
Mildly acidic liquid: https://www.mehandi.com/Fruit-Acid-for-henna-dye-release-s/299.htm
More info on mildly acidic mixes: https://www.tapdancinglizard.com/henna-and-acidic-mixes/
Ancient Sunrise henna for hair kits with everything included: https://www.mehandi.com/Mehandi-com-Ancient-Sunrise-Henna-for-Hair-Kits-s/124.htm

Video How-To
Going red with henna: https://vimeo.com/manage/videos/739464950