Originally Posted by RockChick27
I am not a hairdresser. Perhaps one will be along in a bit. I was Vice-President of a Beauty Supply Company and have worked with a lot of hair problems but take what I say under advisement from a licensed hair dresser.
Stripping generally leaves a lot of brassiness to hair anyway at best. Since you took your roots on out to a blonde, I would purchase a hair bleach with oil. I like to use Wellite Cream Bleach. Two applications come in the box. That should be enough to do your hair since your hair is long, using both applications.
I use 30 volume developer. DO NOT
apply to root area and use only on other hair if it is healthy hair that still stretches without breaking when wet. You could wet a small strand then get just three hair or so and pull them apart. If they break easily rather than stretching then going back when you release the pull on them, I would not suggest using the method I am suggesting.
Apply only to the hair that is darker, working from close to light roots but not on blonde roots, work through to ends of hair. Let process 15 minutes then take a paper towel and rub off the bleach just in one area and see if it is same color as roots. If it is, shampoo out then, if not, reapply a bit of bleach to that area and let process another 10 minutes. Check again. It might be wise to check every 5 minutes.
PLEASE UNDERSTAND NOT BEING ABLE TO ACTUALLY SEE YOUR HAIR, I COULD BE MISUNDERSTANDING SOMETHING SO YOU MIGHT WAIT FOR EXPERTS TO ADVISE.
Once the hair is to the same color as roots, shampoo, apply a light conditioner. You don't want the cuticle of the hair to close so much that it will be resistant to receiving color. I like to use a product that stops all chemical action as there are still traces even though you shampoo that can keep on working the hair a bit. Towel dry.
Choose a color that you want (this is per understanding you would like for the hair to be the same color all over), (I like to use Miss Clairol, mixing 2 oz. bottle of color to 2 oz. of 20 volume cream peroxide - less harsh on the hair.) With long hair, you will need at least two bottles and 4 oz. developer.
Apply on root area 15 minutes, let process, checking to make sure you didn't miss any places. Then apply through all the hair and leave on additional 10 minutes, 15 if hair seems stubborn receiving color but keep in mind if ends of hair are dry, they will take color much differently than root area or even middle part of hair so if really dry, apply roots, as discussed, then mid section, then on ends.
Best to you! :)