Maybe there’s a difference between hard water and soft like here in Melb. My mum used bleach when she lived in London, which has hard water. She said it was for the yellowing, but idk as this was a good many years ago and I may be misremembering. I do know from personal experience that washing sheets etc. by hand with soap most certainly does cause yellowing and something has to be done about it or everything turns grimy yellow gray.
Maybe there’s a difference between hard water and soft like here in Melb. My mum used bleach when she lived in London, which has hard water. She said it was for the yellowing, but idk as this was a good many years ago and I may be misremembering. I do know from personal experience that washing sheets etc. by hand with soap most certainly does cause yellowing and something has to be done about it or everything turns grimy yellow gray.
Interesting because bluing was used in the UK as well. Maybe different strokes for different folks.