Razor burn

So I've been shaving for a while. Tried waxing but all the waxes would give me ingrown hairs. Especially from European Wax Center. I tried this sugar wax, more ingrown hairs. So I figured I'd stick to shaving. The only thing is I have razor burn because I started shaving at a young age and I didn't use fresh razors. They'd be dull and no I have razor burn. Meaning the area above my vagina is darker than the rest of my skin. So I was thinking if it's be a smart idea to try anal bleach on that area?... I mean if they can out it on their ass i don't see why not right?? I just can't take it anymore.