Those approaches can sometimes improve the appearance, but they are not literally washing the bleach mark away.
What to Do Immediately After a Fresh Bleach Splash
Speed matters when the bleach is still on the fabric.
If it is safe to do so, remove the affected garment and rinse the area thoroughly with plenty of cool water.
The goal is to dilute and remove as much of the bleach as possible before it continues reacting with the fibers and dye.
Avoid aggressive rubbing. Friction does not replace lost dye and can unnecessarily stress fibers that may already have been weakened by chemical exposure.
Protect Yourself While Handling Bleach
Household chlorine bleach deserves careful handling.
Work in a well-ventilated area, follow the product label, avoid splashing it onto your skin or into your eyes, and
use appropriate gloves when necessary.