Samsung WF50A86 A Series User Manual page 33

To use oxygen boosters or color-safe bleach
Oxygen boosters or color-safe bleach can increase
washing performance. Make sure to add the oxygen
booster or color-safe bleach after putting the laundry
into the drum.
NOTE
To use both powdered detergent and powdered oxygen
booster or powdered color-safe bleach, it is more
effective to put them together into the drum before
loading the laundry.
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