I am one to always give my honest response and opinion. I do realize some people are fanatically, or overly critical about bleached knots.. More so then they really should be. However, I have dark brown hair, and i have had units where the knots were bleached extremely well. Factories can do a good job of bleaching knots. I have seen it before. Sometimes when they bleach knots it can cause the hair roots and knots to be of a blond color, sometimes it becomes more of a white color. This is on dark hair. So yes, It is possible cause I have had units that were bleached like that with dark hair.

regards