How to make homemade liquid castile soap?

Are you tired of using harsh commercial soaps that strip your skin of its natural oils, leaving it dry and irritated? Have you ever considered making your own soap at home? Look no further! In this article, we’ll teach you how to make homemade liquid castile soap in just a few easy steps. Whether for yourself or as a gift for someone special, this all-natural soap will leave your skin feeling clean and refreshed.


Before we get started on the recipe, let’s talk briefly about what makes castile soap different from other types of soap. Castile soap is an all-vegetable oil-based soap that originated in the Castile region of Spain. It’s known for being gentle on the skin and environmentally friendly due to its biodegradable properties.

Making liquid castile soap at home is not only cost-effective but also allows you to customize it with different scents or herbs based on your preferences. And best of all – no harmful chemicals!

Without further ado, here are the ingredients needed to make 1 gallon (imagine having that much liquid castille):


  • 16 ounces (454g) coconut oil
  • 64 ounces (1814g) olive oil
  • 32 ounces (907g) distilled water
  • Sodium hydroxide aka lye (8 ounces/226 g)

Additionally, have these tools handy before starting –


  • Large bowl made out of plastic
  • Measuring cups & spoons

Nowadays there’s overflooding material explaining why do these utensils need be used above any other items such as clay bowls and bamboo spoons but if looking for explanations regarding safety , maybe ask in r/soapmaking…?

Moving forward –

Step-by-step instructions:

  1. Start by wearing protective gear such as gloves, long sleeves shirt and goggles.

  2. Pour 32 ounces of distilled water into a large plastic bowl. Sprinkle the sodium hydroxide slowly and stir until fully dissolved.

3. In another pot, measure out 64 ounces of olive oil along with 16 ounces of coconut oil ( to this I say Yum winks)_. Heat the oils over low heat until melted but not boiling.

4. Once both mixtures are ready, you can slowly pour the lye mixture into your oil mixture while stirring consistently using an immersion blender or whisk.

5. Continue mixing vigorously for approximately 20-30 minutes (or longer if arm muscles need a workout) or upon reaching trace (the point when soap has thickened enough to leave ripples on its surface).

  1. After achieving trace, allow it cool down in order for other ingredients such as colourants and fragrances added mostly towards cooling temperature else fragrance may lose potency after saponification process is completed; then clog up pump bottles :/

7._ Next day ( be patient here folks) once cooled completely – pour it back onto pot followed by adding additional liquids that seem fit better at room temp than liquid form: eg Teatree Oil/Fragrance+ Essential Oils like lemongrass mint etc as per user preference . And now we let chemistry work its wonders… Leave them rest undisturbed covered well overnight upto few days before use! You will have achieved HOME MADE Liquid Castile Soap!

And voila! You now have homemade liquid castile soap that’s gentle on your skin, good for the environment and smells amazing too! Store it in airtight containers away from direct sunlight & moisture.

Additional Tips:

  • Lye can cause burns if mishandled so always wear proper protective gear however nothing shall stop true artisanship!

-Adding colorant/fragrance towards cooling process time always works best!

-Cool and dry area is prime for soap storage

In conclusion, with a little bit of patience and practice, making liquid castile soap at home can become your new favorite hobby. Get creative by adding different colors or scents and impress your friends with the all-natural goodness. Happy suds-ing!

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