The classic soap-making method, often known as "boiling process" or "hot process" is one of the most traditional methods of soap production. Oils are melted at a certain temperature and mixed with a sodium hydroxide solution. This mixture is kept at a sufficient temperature for the oils and alkali to chemically react, forming soap and glycerin. The boiling process in soap making allows for a more traditional and artisanal production of soap. This method facilitates control over the quality and characteristics of the soap but requires more time and labor. The natural glycerin formed during the saponification process enhances the soap's moisturizing properties for the skin.