White streaks or powdery residue on freshly washed laundry can be frustrating—especially in commercial settings where clean presentation is critical. Whether you're managing a gym, hotel, care facility or childcare centre, white marks can undermine cleanliness standards and increase complaints. In this article, we’ll break down what causes white marks from laundry detergent, how to prevent them, and what New Zealand businesses can do to ensure spotless results every wash.
Posted: Friday 6 February 2026