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Soap nuts, or lerak, have been used to wash clothes. The natural ingredients make this fruit emit foam like soap, which is beneficial for cleaning agents.

Soap nuts are not only effective for washing clothes but also for body and hair care. Want to know more about its benefits and how to use it? Read the following explanation.

What Are Soap Nuts?

Soap nuts are the fruit of the Sapindus rarak tree, which has been commonly used as a natural cleaner in Indonesia for a long time. This fruit contains saponin, which emits foam like a soap when being submerged or squeezed in the water.

Because of these properties, soap nuts are often used as an eco-friendly, natural alternative to detergents. It is frequently used to clean household goods, jewelry, clothing, and batik fabrics without the use of harsh chemicals.

In addition to their cleaning qualities, soap nuts are known to be safer for people with sensitive skin and to be environmentally friendly due to their natural breakdown.

Soap Nuts Compositions

According to the scientific journal Biosaintropis, the saponin content in soap nuts is generally around 12–28%, depending on the fruit’s ripeness and the part of the fruit used.

Along with saponins, soap nuts also contain other compounds, such as flavonoids (as natural antioxidants), alkaloids, polyphenols, and tannins (antibacterial properties).

Soap nuts are frequently used as a substitute for detergents because of these compositions, which makes them efficient as a natural, environmentally friendly cleaner with no artificial residues.

Benefits of Soap Nuts

Soap nuts offer various benefits that allow them to be cleaning agents. In general, you can use soap nuts for the following:

Special detergent for delicate fabrics: Soap nuts can be processed into a special detergent as they produce natural foam for washing delicate fabrics such as batik without damaging the fibers or fading the colors.
Jewelry cleaner: A soap nut solution can be used to clean jewelry, such as gold and silver. Its natural properties help remove dirt and oil without damaging the surface or diminishing the jewelry’s natural luster.
Hair and skin care products: Because soap nut extract is gentle, it can also be processed into the base for natural shampoos and soaps, making it suitable for sensitive skin and helping cleanse without irritating.
Insect and pest repellent: The saponins also have a natural insecticidal effect. It helps reduce pest infestations on plants without using substances harmful to the environment.
Floor and kitchen appliance cleaning: In addition to clothing, soap nut solution is also effective for cleaning floors, kitchen appliances, and various other household surfaces.

How to Use Soap Nuts as Natural Cleaning Agents

You can process soap nuts into multifunctional cleaners effective for household purposes. The most common product you can make yourself is lerak soap. Here are the steps to make the soap:

Choose and Prepare the Soap Nuts

Use dry and ripe soap nuts to make the soap. Then, submerge some fruits in the clean water for several hours to ensure that the saponins dissolve optimally.

Squeeze or Boil the Fruit

For a better result, you can squeeze the fruits or boil them. This process will emit a foamy solution that you can immediately use as a cleaning product to wash clothes or cleanse housewares.

Filter Soap Nut Water

You can filter the soap nut water to separate the grout. This solution will be utilized as a ready-to-use cleaning agent. You can store it in a jar or bottle for future use.

Utilize Soap Properly

Use soap nut solution to wash clothes, batik fabrics, kitchen utensils, and floors. Pour an appropriate amount into the water or onto the surface you want to clean for best results.

Store Soap Appropriately

Keep the solution in a sealed container and a cool place to maintain its quality. Use it within a few days of preparation to ensure the soap retains its quality.

That concludes the explanation about soap nuts, including the definition, composition, benefits, and use as a natural cleaning product for households. By choosing natural ingredients like soap nuts, you can start using more eco-friendly cleaning products.

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Soap Nuts: Compositions, Benefits, and How to Use Them