How to dye bleach stains out of clothes?

Question

my friend let me borrow his shirt which is a black thermal long sleeve shirt, and i bleached 2 spots on it, i dont want him to notice, could i just buy black fabric dye, and it be back to normal or will the one black be darker then the other do i have to dye the whole thing? because there is a design on it

Answer 1

If the bleach spots are just tiny, I've used a black sharpie marker to blend in the black color, and it has worked. Although, If you're really looking hard, you can possibly spot the "flaw". But if the bleached area is large, you can do what is called, spot dyeing, so you don't ruin the pattern.

Answer 2

You could but some black dye, but those bleach spots will always show up.