I'd forgotten the Bicarb trick!
I dyed all my nappies bright yellow the other week by using bicarb!
I'd been using a lot of rash cream and usually I wash my paper liners several times before I bin them, and I should have just binned these but I washed them. I had one fitted that was a bit whiffy so I stupidly decided to wash the whole lot in bicarb, as I usually do when I need to strip. I used to use fuzzi bunz, but now I use bumgenius and this was the first time I had used bicarb.
Basically the whole load was bright yellow, especially where the sudocrem was on the liners, and round the legs of the pockets. Obviously liners don't protect the nappy from cream as well as I thought. My blue bg's were a horrid shade of dirty grey, the white ones are almost totally yellow, and the inners and insides of all the others had a yellow tinge. The ones with cream on them looked like they had been sprinkled with bright yellow pollen.
I'm too afraid to use bicarb again so next time I need to strip I think I will try Fairy liquid