School gave me uniform how do I brighten them up.

[Upandover24]

Ds school gave me some school uniform. But the white tops are not white and the red jumpers are faded. Is there anyway I can make the red tops red again /not faded and the white tops white .

Thank you. Do I Need to run my washing machine on empty after?

Sorry I’ve only just seen this. No I don’t think so, it’s not a dye, just has some brightening technology in the formula I think! You just use it as a regular washing liquid.