Bleach stains on black trousers - help!

[TheGirlOnTheLanding]

I have no idea how it happened, as we don't use bleach (might have happened at work) but I've got splashes of bleach on one leg of my only black work trousers - the affected patches have gone red. There are three or four areas but all quite small. I've googled and there are different suggestions to bleed the colour from the surrounding area (alcohol, vinegar) back into the stain - has anyone tried this and did it work? I'm skint and could really do without replacing them this month so I'm willing to try (also, they're comfy and fit well, and as I got them from eBay I can't replace like with like - why is it never clothes you hate that you ruin).

I’ve coloured in bleach spots with a sharpie before it only lasts a wash though.

You can buy a permanent black fabric marker pen off of amazon, or alternatively just dye them black again.

Well I tried alcohol and it did zip, so marker pen it will have to be! Thanks @bookbuddy and@Bluntness100

Yes, Sharpie/marker pen is the way to go.

I once nearly had to throw away my brand new black jumper for the same reason. Sharpie did the trick 😊.