Sodium Percarbonate: The Combination That Restores Whiteness to Laundry

Sodium percarbonate is effective for whitening laundry, but only when used at the right temperature (hot water), with sufficient action time (1 to 3 hours of soaking), and in combination with soda crystals. A quick wash or cold water reduces its effectiveness. The percarbonate and soda crystals duo dissolved in hot water yields bright laundry without bleach.