The Best How To Lighten Colored Hair That Is Too Dark Ideas. Web 1) apply a darker shade to your hair. So what do you do to lighten permanent hair dye, well read on.

If the hair has been repetitively dyed dark over dark and if the canvas underneath is bleached/porous and possibly light. In this scenario, i would judge what to do by 2 things. If the hair dye you’ve used is too dark and you want to know how to.