Why Make Your Own Soap?
Like many people, we’re concerned about the toxic ingredients in many soaps. Parabens mimic estrogen in the body and can disrupt the endocrine system. Foaming and preservative additives, like sodium laureth sulfate and methylisothiszolinone, can irritate our skin and lungs, as well as having issues with organ toxicity. Products free of these ingredients cost three to four times as much.
At first I was nervous at the thought of making ‘real’ lye based soap, but the glycerin options didn’t appeal. I purchased “The Natural Soapmaking Book for Beginners,” by Kelly Cable. https://www.booktopia.com.au/the-natural-soap-making-book-for-beginners-kelly-cable/book/9781939754035.html. We started our adventure with her ‘Tried and True’ basic soap. No color, no fragrance, just soap.
How easy it was! Just a few simple ingredients – tallow, olive oil, coconut oil, lye, and water.
Safety: Gloves, fresh air and common sense are all you need to avoid harm. Wearing goggles and a mask will provide extra protection. Mix lye and water in an area with good ventilation in a glass or ceramic bowl (it will heat up). Don’t put your face near or breathe the fumes – lye burns.
Mix and heat the tallow and oils on medium, while stirring, before mixing the lye and water in a separate bowl. Once the fumes from the lye/water have dissipated, measure the temperatures of both mixtures. They must both come within a range of 100-110 degree F before combining them.
After my year of teaching Chemistry at our homeschool co-op, it was fascinating to learn that each recipe needed a different ratio of oils to lye. Each oil has a different chemical make-up (unique combinations of carbon, hydrogen and oxygen, basically) and will react a different amount of lye.
Enough oil must be added to react all the lye, plus extra for insurance. No lye should be left in your bars to irritate people’s skin. Kelly’s book explains how each ingredient has its own SAP value, which you can use in an equation to come up with your own ‘recipes.’ I highly recommend getting her book to start your own ‘soap adventures.’
Here is my daughter using a hand mixer to bring our soap to ‘trace,’ which means the mixture has reached the proper consistency to pour into molds.
This soap came to trace quickly. Other soaps we tried (with colors and essential oils) took much longer. We used silicone molds, but you can keep it as simple as lining a shoe box with parchment paper.
For best results, wrap blankets around your filled molds for about 24 hours to keep the heat in, allowing the soap to cool slowly. After removing the bars from their molds, let them cure for 4 to 6 weeks. You’ll end up with hard, long-lasting bars of soap.
We were very pleased with our final product. The bars stayed firm and the soap had a wonderful silky feel.