Adding salt to laundry is a common household trick that some people believe can prevent black clothes from fading. However, there is limited scientific evidence to support this claim. The effectiveness of adding salt to prevent fading depends on various factors, such as the type of fabric, the dye used, and the washing machine's settings.
Salt is often used in the dyeing process for fabrics because it helps the dye adhere to the fibers. Some people believe that adding salt to the wash water can help "set" the dye in black clothes and prevent color bleeding and fading. However, the impact of salt on color retention is minimal.
Modern washing machines are designed to minimize color fading, and using a gentle or delicate cycle with cold water can help preserve the color of your clothes. Additionally, turning your black clothes inside out before washing can reduce friction and help protect the color.
To further prevent fading, you can choose detergents specifically formulated for dark or black clothes. These detergents typically contain ingredients that are milder and less likely to cause color loss.
Overall, while adding salt to laundry might have some marginal effect on color retention, it is not a foolproof method. The best approach to preserve the color of your black clothes is to follow proper washing instructions, use appropriate detergents, and avoid excessive heat and friction during washing and drying.