I Recently cleaned some standard roller blinds in a bath which I have done several times before using full bath of luke warm water, 1 cup of detergent and 1 cup of bleach. However I put in a plastic type black out roller blind which was white and now its got a bluish colour on it. WHY?
I tried it again with bleach only and no joy. I tried it with plain white detergent and no joy. The first detergent was fairy powder as I had no industrial strength at hand. Please help.
Donal