Well if its been going on for a decade or so, it cannot be harmful. grin.
Brian

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On Sunday, May 9, 2010 at 7:52:13 AM UTC-4, Jo wrote:
We have, for some time now, been noticing small yellow spots appearing on
white washing. We recently bought a few new sets of white bed linen and
every single item has now been spotted with yellow marks.
This is becoming very frustrating as the marks cannot be removed.
We run a hot wash through our washing machine regularly and mostly wash at
30 degs, with the occasional 40 deg wash for some towels or bed linen.

Having googled this problem, it seems that it's quite common but no-one
seems to know the answer. Can anyone here enlighten me at all?

Jo

We have same problem at hotel. Brand new towels out of plastic come out with
yellow stains. I read that it was the hardness of the water making the
bleach leave yellow stains. It said to use Oxiclean or water softener tabs.
Some also say use vinegar. Another place i read it could be fabric softener
reacting with bleach. I'm not sure but its 100% annoying. I'm going to
experiment all of them myself soon. I do believe its caused from the
hardness because water dries out skin and hair.