S.H.
Go to a hair salon and get it professionally, fixed.
Really.
Don't experiment.
okay, so i have been dying my hair for years. which i know is just horrible on my hair and is why my hair is soft and smooth like when i was a kid.....anywhoo, i usually go red but was actually tring to go back to my medium red. i had gotten a hair cut from my mom and it was 99% awesome, i just need one little part to be evened out, hubby said he could do it and line up the back better. my hair is shorter in the back and then comes down longer in the front...well, i trusted my hubby...HE SHAVED THE BACK OF MY HEAD!!! he used the 1/4" guard...it was horrible. so i wanted to color it to distract from my horrible hair cut but didnt want to try to lighten it more because i didnt want the back of my head lighter than the restl. so, long story "short", i dyed it red again. now, this was about 3 or 4 months ago....so my roots are showing and the red is faded and gross, of course it has been to long since i colored it. I looked online for a natural way to strip the color from my hair to get rid of the red but the only stuff i found was if you had just colored within the past few days. but i did see natural ways to color you hair. one said to use coffee for brown, chammomile(sp) for blonder....have any of you tried any of those or know of a way for me to get my regular color back without using more chemicals....i am sooooooooooooo over coloring my hair and i just want it back to my boring ol brown.
Go to a hair salon and get it professionally, fixed.
Really.
Don't experiment.
Don't know if you would be game for it but I used Ion (Sallys Beauty) light red brown. I have natural red brown but it is a little darker than what I get with this color. I love it!!! If you are wondering what it looks like on natural medium red brown take a look at my profile pic. I colored two days before my wedding so there is no fading in the picture. :)
If you're going darker, you may be able to get great results using any of the commercial henna products, which are often mixed with other natural plant materials to get the darker, browner shades. Ever since my naturally red hair began fading in uneven patches several years back, I've used henna about every 4-5 weeks to keep the color close to my youthful shade, but leaning into a quieter auburn, which looks gentler with my older skin.
Henna conditions hair beautifully, coating it with a shield of plant proteins that add gloss and body. No toxic ingredients, and only a gentle herbal smell. I get compliments on the color all the time. It's also inexpensive. The main drawback is that it's messy to use, and occasionally people get allergic.