Very grey!

Hi all,
I just bought some nappies off Gumtree and they arrived today - totsbots easyfits v2 - they are so grey on the inside, I'm so disappointed Anyone have any tips to brighten them? Thanks, Jenn

Hello
I can t remember what material they are made of?
A good wash and a good bit of sun can sometimes do wonders.... Now where is that sun?!

They are a BTP pocket nappy PUL outer and 50% rayon from bamboo 50% polyester -says the label. I'll give that a go. Thanks, Jenn