How to keep white clothes white
You can prevent the yellowing of white clothing by washing whites separate from colorful or dark fabrics, washing using warm or hot water or adding baking soda with your detergent to a load of whites and air drying.
Washing white clothes using the “whites” wash cycle helps to prevent yellowing by using high spin speeds and high water temperatures of around 140ºF. Be cautious with certain fabrics like wool, cotton, linen and silk as hot water can cause shrinkage.
Other ways to keep your white garments bright include using the correct amount of detergent and fabric softener and avoiding overloading your washing machine. As always, remember to consult each item’s laundry care label and product use and care guides to avoid any practices that can lead to damage.