For specialized washing needs, the adjustable nature of laundry detergents offers advantages

For specialized washing needs, the adjustable nature of laundry detergents offers advantages. For example:

- Infant and toddler clothing: Reduce usage to avoid residue.

- Heavy oil stains: Spot pre-treatment is recommended.

- High-end fabrics: Can be used with a dedicated softener.

Experiments have shown that when using laundry detergent with pre-treatment, cleaning performance can be improved by over 40% for mixed, stubborn stains, something that is difficult to achieve with fixed-ratio laundry pods.

In-depth Comparison Test: Cleaning Power and Residue Risk

A third-party testing agency conducted parallel tests on six major brands, showing the following:

1. Cleaning Performance: Laundry pods perform better in cold water (with an average 15% higher stain removal rate) due to their surfactant-coated technology, which maintains activity at low temperatures. Laundry detergents, on the other hand, are more effective in removing oil stains when washed in hot water above 60°C.

2. Residue: Laundry pods have 27% less phosphate residue than liquid detergents. However, some brands require a specific water temperature (>20°C) for the degradation of their PVA water-soluble film, and cold water washing may result in the risk of microplastic residue.

3. Color Protection: After 30 washes, laundry detergent containing color protection factors showed a ΔE value 1.2-1.8 lower for color difference than laundry pods, indicating better color protection for colored clothing.