Ive recently bought a white jumper and white underwear - the items have only been washed 3-4 times and I feel they are starting to look grey already. I tend to hot wash my whites - could this be a problem
I think it really helps if you only wash whites with whites and wash them frequently.
I wash mine at 60 and often put in a scoop of Vanish or other stain-removing powders. (Don't find the Crystal White powder any better than the regular.)
Used to use ACDO whitening sachets, but haven't seen them around for some time now.
Good luck with them.
I can honestly say my whites always look white, even old stuff, and it's because I only wash whites with whites!! Easy, no need for any special powders!
I do a separate whites wash, 40 degrees, and use Dr. Beckmann GloWhite (used to be called Acdo). It's like a big teabag full of some kind of bleach powder - stuff comes out dazzling. I buy it in Morrisons or Tescos.