Retouch Highlights
![Highlighted hair](highlighted-hair-th.jpg)
If your hair is healthy, and in good condition, you should be fine to have new highlights added, or the existing highlights re-colored, at any time. Your stylist should perform a strand test before performing any chemical service on top of previously colored hair to be certain that the hair can withstand the process.
As long as the strand test shows good results, you should be good to go.
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See also:
Highlighting
How long do highlights last and how often do you need to touch them up?
How long should I wait before getting highlights and lowlights redone?