I’ve got some white t-shirts that have graphic prints on the front, that are stained in the armpits. I was wondering if I could bleach just the armpits of the shirt? I was thinking if I rinsed the bleach off the pits before washing it wouldn’t damage the rest of the shirt, but I’m not sure if there’s a better way of dealing with pit stains. Thanks in advance.

Shirts are cotton if it matters