I always notice but it doesn't really bother me. After all, I've gone a few weeks without touching up before (not when I was blond though),
I remember when Kelly Ripa was still on All My Children and she let her dark roots grow out for months and months. She got so much hate mail when really, the reason she didn't dye her hair was because she was pregnant! Since they didn't show her from the boobs down unless she was wearing something baggy or had something blocking the view of her belly, no one knew!