The short answer is no. Saponification is the chemical process of making soap that involves an exothermic reaction between lye (sodium hydroxide) and a fat (oils and butters). Soap cannot be made without using lye. When made correctly, no lye will remain in the bar of soap. The saponification generally takes about 24 to 48 hours to complete once the lye and oils have been mixed and the raw soap has been poured into the mold. Both solid bar and liquid soaps are made from lye.