It is quite simply a chemical reaction that takes place between a fatty substance (which can be an oil, butter, etc.) and an alkaline solution (i.e. a strong base). At the end of this reaction, we obtain a paste which will be put into a mold and left to rest for a few hours or a few days. Then the bar of soap is unmolded and cut into soaps which are placed in “cure” for a period of between 4 and 8 weeks. This cure allows the soap to dry out, i.e. to lose water and therefore harden. The cold saponified soap obtained is surgras because at the end of the saponification reaction there will remain the unsaponified oils and butters constituting this surgras which will nourish and soften the skin.
The cold saponification process therefore requires no cooking, which is why it preserves all the benefits of the oils and/or butters. It also makes it possible to preserve the vegetable glycerin formed naturally during the saponification reaction. This vegetable glycerin has a very important role in skin care. It has moisturizing properties and a strong ability to retain water. Thus, the combined action of surgras and glycerin nourishes the skin and protects its hydrolipidic film.
Pass the soap under water to moisten it, lather by applying it to the whole body and/or face, then rinse.
To prevent the soap from melting prematurely, please put it on a soap dish away from water splashes so that it can drain and dry well after each use. We recommend that you preferably take it out of the shower and keep it dry after use. Avoid leaving it under water, or in an unperforated dish.
Bosten soaps are formulated to suit sensitive and/or problem skin. Their composition is balanced and adjusted so that the soap is very gentle on the skin.
Bostèn soaps are completely biodegradable.
During our manufacturing process, we take care not to reject anything in nature, not to pollute groundwater, to use little water for manufacturing and to adopt recyclable kraft paper packaging.
Bosten soaps are not tested on animals. They are VEGAN, as no material of animal origin is used in the manufacturing process.