If you regularly find powdery stains on freshly washed laundry, the cause can usually be traced to one of two things:
Here's how to make powdery clothing stains a thing of wash days past.
Set the wash water temperature to warm for the best results. This is because laundry detergent is designed to be activated by warmer water, allowing it to dissolve completely in the wash water and be carried away in the rinse water.
When the water temperature does not fully activate laundry detergent, powder detergent remnants can remain on your freshly washed clothes.
One way to prevent this from happening is by adding an extra rinse cycle to each wash load. This can help ensure your laundry detergent is thoroughly washed away in the rinse cycle.
Often, placing the laundry detergent in directly atop garments in the washing machine can be the cause of powdery residue. To prevent this, add detergent first to a wash load, before tossing in dirty clothes.
The most common culprit, however, is usually an over-packed washing machine. Too many clothes in a load doesn't allow the machine adequate space or water to get clothes thoroughly clean. As a result, laundry detergent often lingers on the clothes after the wash cycle is complete.
Consider changing to liquid laundry detergent to make clothing detergent remnants on clothes a thing of the past.