The Risks of Using Dish Soap Instead of Laundry Detergent | February 10, 2025

Living with roommates can lead to some unconventional habits, especially regarding household chores. One common debate arises over using dish soap as a substitute for laundry detergent. While it might seem like a quick fix to avoid buying detergent, dish soap and laundry detergent are not interchangeable. If your roommate insists that “it’s all the same,” it’s wise to be cautious.

Using dish soap in the washing machine poses several real problems, including potential damage to clothing and appliances, as well as skin irritation. Understanding the differences between these products and the risks involved is essential. This article will help clarify why sticking with laundry detergent is the safer choice.

Key Differences Between Dish Soap and Laundry Detergent
Chemical Composition
The primary difference between dish soap and laundry detergent is their formulation. Laundry detergent is specifically designed for fabrics, containing enzymes and surfactants that effectively remove dirt, oils, and odors while maintaining fabric quality. It is also pH-balanced to be gentle on both clothes and skin. In contrast, dish soap contains harsher agents designed to cut through grease, which can damage fabrics over time.

Foaming Action
Dish soap produces a significant amount of foam, which is ideal for hand washing dishes but problematic for washing machines. High-efficiency washers, in particular, are designed for low-foaming detergents. Excess suds can confuse the machine’s sensors, leading to errors or shutdowns. Even in standard washers, too much foam can clog the system, potentially causing leaks or buildup that may require costly repairs.

Residue and Rinsing Issues
Laundry detergent is formulated to rinse out completely, leaving no residue on clothes. Dish soap, however, can leave a film, making fabrics feel stiff or greasy. This residue can attract dirt more easily, resulting in more frequent washes.

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