Homemade Soap Recipe With Lye - DIY Soap Making Using Lye – VedaOils

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Homemade Soap Recipe With Lye - DIY Natural Soap With Lye

If you're interested in making your own soap at home, then a lye-based soap recipe is a great place to start. Lye, also known as sodium hydroxide, is a key ingredient in soap making as it reacts with fats and oils to create soap. While working with lye can seem intimidating at first, with proper precautions and careful measurements, you can make a beautiful and nourishing soap that is perfect for your skin.

In this soap recipe with lye, we'll guide you through the process of making a lye-based soap that is not only effective but also customizable to your preferred scent and texture. So, let's get started!

Safety Precautions For Making Soap With Lye

Safety Precaution for Soap Making

Working with lye is a crucial step in making soap, but it's important to take the necessary safety precautions to avoid any mishaps or accidents. Here are some detailed safety precautions to keep in mind when making soap with lye:

1.) Wear Protective Gear

Always wear protective gear such as gloves, goggles, and a mask when handling lye. It's also recommended to wear long sleeves and pants to protect your skin from any potential splashes.

2.) Work in a Well-Ventilated Area

Lye can release fumes that can be harmful when inhaled. Therefore, it's essential to work in a well-ventilated area, such as an open window or a fan to circulate air.

3.) Keep Vinegar Nearby

If lye comes into contact with your skin or eyes, immediately flush the affected area with water and then use vinegar to neutralize the lye. Keep a bottle of vinegar nearby during the soap-making process.

4.) Measure Accurately

Always measure lye and water accurately with a digital scale and use heat-resistant containers to mix them. Inaccurate measurements can lead to an unpredictable chemical reaction.

5.) Mix Lye and Water Slowly

When mixing lye and water, always add the lye to the water, and never the other way around. Stir the mixture slowly and carefully to prevent splashes and fumes.

6.) Use Designated Utensils

Use designated utensils such as stainless steel or plastic for lye and soap-making. Do not use aluminum as it can react with lye.

Soap Recipe With Lye

Homemade Soap Recipe With Lye

True, natural soap is created by hand or at home using lye and oils. Making your own soap is an excellent method to have control over what your family puts on their skin and ultimately consumes. Here’s how you can make your own soap using this soap recipe with lye:


  • Lard - 2 Lbs
  • Lye - 4.4 Oz
  • Water - 7 Fluid Oz


To begin, the initial step is to accurately measure the lard and lye with a scale, and the water with a liquid measuring cup. The lye must then be mixed with the water, which requires some specific preparation. It's recommended to do this in a well-ventilated area, preferably outside, and always pour the lye into the water and not the other way around. After combining the ingredients, the jar should be placed on a stable surface and kept away from children or animals.

It's important to wear safety glasses while mixing the lye and water. Once the mixture is thoroughly stirred with a wooden or plastic spoon and fully dissolved, it should be allowed to cool to the appropriate temperature. By following these steps and taking the necessary precautions, you can safely make your own soap using this soap recipe with lye.

After preparing the lye solution, the next step is to heat up the lard to the appropriate temperature. Once the lye solution has cooled to around 85 degrees Fahrenheit, and the lard is around 90 degrees, they can be mixed together. However, these temperature ranges are not strict, and slight variations are acceptable.

While stirring the lard in a plastic bowl using a plastic or wooden spoon, gradually add the lye solution while stirring constantly until the mixture thickens to a Slurpee-like consistency, which typically takes 30 minutes to an hour. At this point, essential oils can be added for fragrance, or the mixture can be left plain. Finally, pour the mixture into the mold and scrape the sides of the bowl to ensure that all of the soap is used.

When the lye water and fat are combined, they form an emulsion that triggers a chemical reaction known as saponification, which produces soap. After several days in the mold, the soap becomes firm enough to be removed from it. The next step involves cutting the soap into bars using a knife or bench scraper and placing them in a cardboard box lined with brown paper. To ensure complete saponification, the soap needs to be aged for a minimum of 4 weeks. This soap recipe with lye will help you to make your natural soap at home.

To test the soap, try washing your hands with it. If it leaves a slimy residue on your hands, rinse them with vinegar and let the soap cure for a few more weeks. When the soap is well-mixed and fully saponified, it will have a long shelf life. Once you have finished making soap, it's essential to clean all the equipment thoroughly with hot soapy water and rinse it with vinegar to eliminate any remaining lye residue.


Making soap with lye can be a fulfilling and enjoyable DIY project, but it's essential to prioritize safety and follow the necessary precautions to avoid accidents. Accurately measuring the ingredients, working in a well-ventilated area, wearing protective gear, and keeping children and pets away from the lye solution are some of the critical safety measures to keep in mind.

With these precautions and steps of soap recipe with lye, you can create high-quality soap for personal use or to give as a thoughtful handmade gift. All the ingredients can be bought right here at VedaOils!


Q: Is lye dangerous to use when making soap?

A. Lye is a highly caustic substance that can cause chemical burns and other injuries if not handled properly. However, when used with care and following the necessary safety precautions, it can be used safely in soap making.

Q: Can I use any type of fat when making soap?

A. Different fats have different properties that can affect the final texture and characteristics of the soap. Some commonly used fats in soap making include lard, coconut oil, olive oil, and shea butter. It's important to research and choose the type of fat that best fits your desired soap outcome.

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