Don’t get agitated about that mysterious white residue on your washed clothes. It is probably the result of washing clothes in hard water with low-quality detergent containing only sodium carbonate. To keep things clean, use a detergent that contains both aluminosilicates and sodium carbonate, which work together to soften your wash water. Also, use the hottest water possible, and consider installing a water softener.
Go Soft On Clothes Residue