About production methods
How we make our products and about the characteristics of each product made by different methods.
Q：What is a pot boiling method?
This is a traditional method of soap production in which, as the name implies, the soap is boiled in a pot. It is sometimes referred to as the "saponification and salting-out method." The oil and fat are heated in a pot, stirred, and then combined with a caustic soda (sodium hydroxide) solution, which breaks down the oil and fat molecules into fatty acid and glycerin. The fatty acid bonds with sodium, and soap is produced. This process is called "saponification." After saponification, natural salt is added and the soap and impurity separated out. Salting out and still standing help the unsaponificates to react. This is followed by a final round of salting out that removes as many potentially irritating components as possible. Pot boiling method is a soap production method that has been passed down from generation to generation.
Pot boiling method
- Q：What are the advantages of soaps made by pot boiling method? A： The natural moisturizing factor, Glycerin, which is originally contained in the natural oil and fat used as raw material, remains moderately in the soap body. It will not strip away even necessary sebum that protects the skin and relieve the tight and dry feelings after washing. Soap is the only cleaning agent contained and it will rinse off the dirts and waste products quickly. Also, the cleaning agent will not remain on the skin. It will give a fresh feeling after washing and remove oiliness.
- Q：What is the difference between the "milling method" and the "frame kneading method"? A： The milling method is the process of drying, mixing, kneading, and finishing scooped-up soap body using a machine in a short time. The frame kneading method, on the other hand, produces soap by pouring liquid-state soap into the frame, cooling, solidifying, and cutting it, and finally drying the cut blocks for up to about 60 days. Soap produced by the milling method is somewhat likely to crack and melt but can be offered at a low price. Soap processed by the frame kneading method is less apt to crack and melt because the water content and other substances are volatized and, as a result, crystals increase in density at the stage of drying and aging. Transparent soap, in particular, becomes harder and more transparent at the stage of drying and aging.