Help! I’ve washed my white hoodie with sons new red shorts

[fireworksinaugust]

I don’t know how they ended up in the same wash but the damage isn’t too bad.
It’s a navy and white striped hoodie and the only part that’s ruined is the cuffs have a pink tinge.
Any ideas how I can fix this?
The cuffs are pure white.

You could try a colour run remover

Soak it in a strong solution of bicarbonate of soda and water