What to do with this discoloured skirt

[Dingdong99]

I have this skirt which I love, but for some reason it now has a slightly yellow tinge all over it

It's made viscose abs says wash wool cycle at 30 degrees

Any suggestions as to how I can fix it? It's one of my favourites so slightly upset!! Thanks

[thelegohooverer]

Have you tried putting it out in the sun? I’ve done that with difficult stains before but usually on cotton and linen fabrics so I’m not sure about viscose

[MadMadMadamMim]

Have you tried putting it into a wool wash with a Dr Beckman Glow white sachet?

[Dingdong99]

That s a good idea! Especially with this weather. I'll pop it out tomorrow

Thanks x

[Dingdong99]

Thanks Mad, do you think that'll whiten the black spots?