Is There Lye in Soap

However, lye is used to make the soap. … Soap is made using a chemical reaction. This chemical reaction is called saponification, which combines oil and lye to create soap and glycerin. If the process is carried out correctly, there is no lye left in the soap.

Is all soap made with lye?

All REAL soap is made with lye (sodium hydroxide mixed with liquid). Any skin or hair cleansing product made without sodium hydroxide is not soap, it is detergent.

Does modern soap have lye?

The Chemistry of Soap So, while soap is made with lye, it doesn’t contain lye. Modern methods and measuring scales – as opposed to what was available to frontier women – allow soap-makers to use the proper mixture of oils and lye, ensuring that all lye is consumed.