Did your curtains and carpets lose their color?
The color is no longer as shiny ?
Add 82.5 g (1/3 cup) of salt to the laundry soap you usually use for the washing machine and start a wash to refresh the colors of your curtains!
If your carpet is too large to put it in the washing machine, or if you have wall to wall carpeting, rub it with a cloth soaked in very salty water.
Your carpet will regain its colors!