How Soon Can I Re-dye My Roots?

I have been coloring my hair (3n) with Sally's hair color for years. I recently dyed my hair not realizing I used volume 20 instead of 10. My roots are now still completely brown (5n) while the rest of my hair looks like a 2n. How soon after coloring my hair can I fix my roots? I colored my hair today.


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March 30, 20170 found this helpful

Deep-condition and re-color in 2 weeks.

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March 30, 20170 found this helpful

If you JUST do your roots where it is fresh and youre careful not to overlap, go ahead and do it.

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March 31, 20170 found this helpful

Human hair is not alive. It has no nerve or blood supply. It would not be incorrect to say 'hair is dead'. Scenario: For the sake of test purposes, a certified trichologist's field of vision is limited to what he can see under a microscope.

Under one microscope is a strand of hair taken from a 10 year old wig. Under the other is a strand still attached to a person's scalp. When asked to tell which strand is from the wig and which is still attached to someone's scalp, the trichologist could not do so.


There may be a period of up to 48 hours after treating the hair with color, during which the hair continues to return to its more normal pH. Too, the hair cuticle which may have been raised during the coloring process, may continue to 'retract' a very slight degree during this 48 hour period, meaning the cuticle scales would lie closer to the hair shaft.

After this initial period, and without further chemical applications, the hair is essentially 'ready for more color to be applied', if needed, whether the wait period is 2 days or two years. The waiting period for reapplying color should only need to take into consideration the health of the scalp and the convenience of the patron.

No mount of conditioners will prepare the hair for further color treatments. To do so, the conditioner would have to deposit beneficial chemicals which would become an integral part of the hair, itself.


Or, that conditioner would have to make some positive changes to the structure of the hair. I know of no conditioner that does either. Since conditioners do not permanently infuse components into the hair, any beneficial components are washed away at the next shampoo.

When I was in Academy, some students experimented with color. They bleached and toned a student's hair. The resulting shade was green. Within 2 hours and under the guidance of an instructor, the toner was stripped from the hair and another toner was applied. The resulting shade was well liked by the student and there was no ill effects to the student's hair or scalp.

Each case is different and requires different considerations. However, I see no benefit of waiting over 48 hours for any type of corrective color work.


To my knowledge, Sally's does not carry its own brand of hair color.

As there are no standards set for naming shade colors, the numbers you gave don't help a lot. 5n in one brand could be very different from 5n in another. Also, it was unclear to me whether the 3n you mentioned was your virgin hair color or the color you applied.

Most hair coloring products requiring a developer will require a 20 volume peroxide. If you have been using 10 and then used 20, you should have seen more (lightning) results, not less.

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