Why using the right amount of laundry detergent matters


Steven E / Thursday March 27, 2025


We toss our clothes into the washing machine, add detergent, and expect them to come out clean and fresh. However, using the right amount of laundry detergent is often overlooked or misunderstood, leading to less-than-ideal results. Whether it’s using too little or too much, improper detergent measurement can impact the cleanliness, fragrance, and longevity of our clothes.

In this article, we will explore the importance of using the right amount of laundry detergent and its effects on the overall laundry process. By following these guidelines, you can achieve cleaner, fresher clothes while also benefiting your washing machine and your wallet. Let’s dive in and discover the secrets to detergent usage!

The information provided in this article may not apply to your specific appliance model. While we strive to offer helpful advice for all types of appliances, variations in models and configurations can lead to differences in cleaning recommendations. For the most accurate guidance, we strongly recommend consulting the use and care manual for your specific appliance model.

Important factors

Read the instructions  

Different laundry detergents have varying concentration levels and recommended usage guidelines. Take a moment to read the instructions on the detergent packaging, as it will provide valuable information on the proper dosage for different load sizes.

The size of the load and the level of dirtiness

The amount of detergent required depends on factors such as the size of the load and how soiled the clothes are. Larger loads may require more detergent, while smaller ones may need less. Additionally, heavily soiled items may need a bit more detergent compared to lightly soiled ones. Assess the specifics of each load to determine the appropriate amount.

Adjust as needed

It’s better to err on the side of caution when measuring detergent. Begin with a slightly smaller amount than what you think is necessary, and then assess the results. If the clothes aren’t clean or don’t have a pleasant fragrance, gradually increase the detergent quantity until you find the right balance.

Use the measurement lines 

Most laundry detergent bottles or dispensers have measurement lines to guide you in using the correct amount. These lines are usually labeled for different load sizes, such as small, medium, and large. Follow these guidelines to ensure you’re adding the appropriate amount of detergent for your specific load.

Adjust for water hardness 

The hardness of the water in your area can impact the effectiveness of your laundry detergent. Hard water requires more detergent to form sufficient suds and clean the clothes thoroughly. If you live in an area with hard water, you may need to increase the amount of detergent slightly. Conversely, if you have soft water, you might be able to use a slightly smaller amount.

The type of fabric being washed

Different fabrics have different cleaning requirements. Delicate fabrics, such as silk or wool, may require less detergent to avoid damaging the fibers. On the other hand, heavily soiled items like workout clothes or children’s play clothes may need a bit more detergent to remove stains and odors effectively. Adjust the detergent quantity based on the fabric type and level of dirtiness.

Too little or too much detergent

Using an incorrect amount of laundry detergent can have noticeable effects on your clothes and the washing process. Here are some signs that indicate you may be using too little or too much detergent:

  • If your clothes are consistently coming out of the washing machine with stains or grime still present, it may indicate that you’re using too little detergent. Inadequate detergent can fail to break down oils, dirt, and other residues effectively. Similarly, if your clothes have a persistent unpleasant odor after washing, it might be a sign that you’re not using enough detergent to combat odors and bacteria.
  • On the other end of the spectrum, using too much detergent can lead to excessive suds during the wash cycle. Excessive suds can prevent effective rinsing, leaving behind a soapy residue on your clothes. If you notice that your clothes feel sticky or have a slimy texture after washing, it’s likely that you’re using too much detergent.
  • Using an excessive amount of detergent can lead to detergent residue buildup on clothes, especially in fabrics with more absorbent fibers like towels or bedding. This residue can come into contact with your skin, potentially causing skin irritations, allergic reactions, or discomfort. If you or your family members experience unexplained skin issues after wearing freshly laundered clothes, it could be a result of using too much detergent.

The right amount of detergent

Using the right amount of laundry detergent offers numerous benefits, not only for your clothes but also for your washing machine and your budget. Here are some advantages of using the appropriate amount of detergent:

For clothes

  • Cleaner clothes without residue or odor: Using the right amount of detergent ensures thorough cleaning of your clothes. It helps break down stains, dirt, and oils effectively, leaving your garments fresh and spotless.
  • Prevention of residue buildup on fabrics: Avoiding excessive detergent prevents residue from accumulating on fabrics, eliminating the risk of clothes feeling sticky or having a lingering odor.
  • Longer lifespan for clothes: Overusing detergent can be harsh on fabrics and accelerate wear and tear. By using the right amount of detergent, you protect the integrity of your clothes, extending their lifespan.

For washing machines

  • Residue buildup: Excessive detergent can leave behind residue on various parts of the washer, including the drum, hoses, and dispensing mechanisms. Over time, this residue can accumulate and lead to clogs or blockages, affecting the washer’s performance and efficiency.
  • Increased wear and tear: Excessive suds created by an overdose of detergent can put additional strain on the washer’s motor, pump, and other mechanical components. This increased stress can lead to premature wear and tear, potentially resulting in the need for repairs or even the replacement of parts.
  • Malfunctioning sensors and switches: Some modern washers are equipped with sensors and switches that detect water levels, load size, and detergent presence. Using too much detergent can interfere with these sensors, causing inaccurate readings or triggering false alarms. This can disrupt the washer’s normal operation and lead to potential malfunctions or error codes.

Additional information

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