I know it becomes a matter of pride after a while when you`ve been no-poo for a long time. I don`t think theres any other way to get those blasted cones out.
I DT 2 days before and a few days after.
Unlike most other people, I also co-wash right after highlights. I have an allergy to hair dye and even with foils some makes its way to my scalp. I have to get it off or I end up with little `cigarette burns` on my scalp (or worse). My colour doesn`t seem to fade out any quicker than anyone else`s. I`m really not sure that it`s entirely necessary to have a waiting period. I know opinions vary greatly on this subject but my stylist told me that older dyes took time to develop but the newer ones are fine.