Step 1: Materials Needed
* 47 oz organic olive oil (technicallycastile soapis only made from olive oil but, feel free to try something completely different)
* 32.9 distilled water
* 9.39 oz KOH (potassium hydroxide)(where we get ours)
* (Later at dilution) 80 oz of distilled water
(all pots, spoons, bowls etc. make sure they are stainless steel and/or heat safe)
* Slowcooker (one that you will only use for soap, do not use again for food)
* Accurate scale
* Stick blender, immersion blender
* Large stainless steel pot
* Containers to store your soap
* Notepad and pen
Make sure you can set aside enough time during the day to give attention to your project without any distractions (easier said than done), have all of your materials ready to go, and ingredients already measured in safe and covered containers.
Step 2: Remember the Movie Fight Club? Yea…they Were Using KOH
Image source Fight Club. Director David Fincher. 20th Century Fox, 1999, film
(Click here if you do not see animation)
First Aid for KOH
If KOH is in contact with your skin, first treat the area by rinsing with vinegar and then water for 10-15 mins. Contact with the eye can cause severe damage and even blindness so, it is great to keep an eyewash solution nearby in a squirt bottle (can be made of distilled water or a sterile saline solution) Rinse infected eye out with the eyewash solution for at least 10 mins. Have a phone nearby with the number to poison control center ready.
Find a local center near you
National Hotline 1-800-222-1222
Step 3: Waiting on Naptime...
Step 4: "Suit Up"
Step 5: Warm Up
Start with 47 oz of olive oil in your slowcooker with the setting on low.
Step 7: Go Slow
Step 8: Lye Into the Oil
Step 9: Stir Forever
Step 10: Trace
Once your soap is at this point we need to let it sit and do its thing. Put a lid on it and in every 20 mins, slowly stir it back up.
Step 11: Thickening
Step 12: Keep on Going
Step 13: Testing
Step 14: Can You Read It?
Step 15: Transfer
Step 16: Dilution
Step 17: There You Go...
You should have woken up this morning with your own homemade liquid soap:) If you want to make sure that the soap is fully cured and the lye is no longer active, wait 3-4 weeks before use.
Once again this is only a basic liquid castile soap and it is a great place to start. From here you can experiment with scents, oils, dilution etc…
Open Source Soap Co.
OSSC is starting from the beginning to develop a liquid base soap that is versatile in your home, easy on your wallet and kind to our environment. We are testing, documenting and sharing our process along the way because, we believe that everyone should have the right to know what is in their products and how they are made.
Basic "Lye Free" Liquid Castile Soap
-An all around great basic cleaner with only 3 ingredients used. Great start for beginners.
This is a from scratch recipe that uses KOH potassium hydroxide lye and should not be attempted unless you will take it seriously and follow all the safety precautions.
Foam Pump Mason Jar Soap Dispenser
Create your own foam pump mason jar soap dispenser from material that you may already have in your home. Did you know that the foam soap that you buy at the store contains mostly water? And that it is actually the pump itself that creates the majority of the foam? Save yourself some money by diluting 6 parts water to 1 part of your favorite liquid soap