I just dyed my hair using liese hair dye but i guess it wasn't enough and my hair was too long. Less then half of my hair is brown while the others remain black-ish or very dark brown that it's hardly noticeable. I'm planning to buy more of it and re-do my hair but i'm worried that it'll affect the already dyed parts. Will it turn lighter if i re-dye it? Is there any other way for me to fix my hair? Any help will be greatly appreciated. I'm desperate >.<