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How to wash white clothes
Separate white clothes from light-and dark-colored clothes.
Whites should always be washed separately from colored clothes to avoid colors transferring to and staining white clothes.
Separate whites with colors from all-white whites.
This helps prevent colors from bleeding onto all-white clothes, despite how small the surface area of color may be. For example, separate a white shirt with bright red stripes from all-white t-shirts.