So last week I cleaned a sofa, white, seemed to be mostly cotton, or cotton/ linen. I cleaned the arms and back, looked great. I proceeded to clean a cushion (prespray with prochem fine fabric, extract with hot water, sapphire scientific toool) and the white cushion turned pink only in certain areas. I couldn't get it out. I stopped the cleaning, and told the customer that I think that since it had down feathers, it was treated with a fire retardant that was turning pink when wet. So I told her I could come back and put a trash bag between the cushion filling and the outer cloth on the rest of the cushions.
Today I went back, put the interior cushions inside a trash bag, and cleand the cushions. Same thing still happened. The trash bags didn't help at all. Almost nowhere on the body of the sofa turned pink, but every cushion had pink at least somewhere on it, some worse than others.
The customer told me that she thinks it looks better having some pink spots than all the dirt and spots that were on it. But I am still upset that it turned pink. I looked online and found an article from a carpet cleaning company that said that it is caused by "indicator dyes" and said that you can just spray it with sodium bicarbonate and it will totally fix it. Seems too good to be true. Anyone have experience with this? I have cleaned probably a thousand sofas and never had this happen.
Today I went back, put the interior cushions inside a trash bag, and cleand the cushions. Same thing still happened. The trash bags didn't help at all. Almost nowhere on the body of the sofa turned pink, but every cushion had pink at least somewhere on it, some worse than others.
The customer told me that she thinks it looks better having some pink spots than all the dirt and spots that were on it. But I am still upset that it turned pink. I looked online and found an article from a carpet cleaning company that said that it is caused by "indicator dyes" and said that you can just spray it with sodium bicarbonate and it will totally fix it. Seems too good to be true. Anyone have experience with this? I have cleaned probably a thousand sofas and never had this happen.

How to remove pink stains on upholstery after cleaning , sofa turning pink
If you have pink stains appearing on your upholstery after a spillage or cleaning, here's how to fix it. Pink stains appeared after cleaning, the remedy
www.cheshire-cleaning.com