how to make cold process soap.

The instructions below will teach you how to make cold process soap using our innovative process. Our process is different for three main reasons:

  1. Using our formula, your soap is safe to use in 2 days! You will know exactly what the final product weight will be. You can make and sell your soaps faster, knowing what the correct label weight should be, without waiting for the water to evaporate.  
  2. We use a 50/50 lye solution. This lye is already dissolved in water. It is safer to use, eliminates toxic fumes and quicker to produce soap using it. Because of using the 50/50 solution, we produce everything at room temperature. No thermometers needed.
  3. We have crafted the perfect soap base - The Trinity Bend - that allows you to use a premixed blend of oils that will save you time while you make soap. And there is still plenty of customization left for you to be creative!



Here are the ingredients and tools you need to make 4.5 lbs of soap using our 5 lb wooden box mold:



Make cold process soap in 10 steps:

  1. Put on your PPE.
  2. Weigh out all ingredients needed for a batch to begin. Use large heat-safe plastic, glass or stainless steel containers.
  3. Heat your Trinity Blend on low in a wax melter to 80-90 degrees F and mix gently. If the room temperature is already 80 degrees or more, you may skip this step.
  4. Add Himalayan salt into your water and mix using a whisk.
  5. Now add your water/salt mixture to your Trinity blend and use an immersion blender to mix for approximately 1 minute.
  6. Next, pour in your 50/50 lye solution and mix using an immersion blender until mixed completely (approximately 1 minute). Your mixture will start to thicken (this is trace beginning to happen).
  7. When you reach a light trace, you can write your name into the batter or see the drip indentations in your batter. This is when you are ready to add your kaolin clay, fragrance or essential oil, and other additives to the mixture. 
  8. Blend using an immersion blender until thoroughly combined or soap begins to thicken to a pudding-like consistency. This is when you are ready to pour into your mold.
  9. Pour into mold and add any swirls or designs to the surface of your soaps. 
  10.  Leave undisturbed for at least 24 hours then unmold and cut your bars using gloves. Soaps will be safe to use after 48 hours. 



how to make cold process soap

Although your soaps are safe to use after 48 hours, they still contain additional water that will evaporate over time to create a denser, harder bar of soap.

Depending on the weather, you will reach your final product weight in 2 to 6 weeks.

This is what we refer to as “curing” your soaps, although most people get this evaporation stage confused with saponification and believe that your bars are not safe to use during this entire process.

Huge myth!

Your soaps are safe to use after 48 hours and saponification is complete, they just haven’t reached their lowest weight yet. If you are in dry, hot weather this process will happen faster than if you live in a humid environment. Using dehumidifiers can help speed up this process.

If you plan to sell your soaps, you must label the product weight on your packaging. Once you have the same bar weight for over a week, your bar is fully cured and that is the weight you will use on your packaging. 

For example, if your bar initially weighs 3.5 ounces after 48 hours, it may cure to 3.2 ounces over the course of a few weeks.

If you follow the same recipe, as most soap makers who sell their product will, you will know well in advanced your finished bar weight.

Therefore, even if your bar is still curing and 3.4 or 3.3 ounces at the time you package it, you can label it and safely sell it as a 3.2 ounce bar of soap. 

This is a GAME CHANGER as it will help your cash flow, inventory needs, product availability, and ability to say YES to sales opportunities as a small to large soap making business.

Waiting up to 6 weeks to sell after your product has been made is not scalable for most soap makers. Using this labeling tip, you can break through ceilings (or burst the bubble might be more applicable here!) and grow your business.