We manufacture liquid soap with the “semi boiled saponification process. This method is used in the industry for the manufacture of certain types of soap and also in the craft industry because of its simplicity.

With this method, and provided that the oils used are of exceptional quality, we can produce high quality soap.

The saponification is done in a traditional way, in open double skin boiler (cratcher). Τhe process takes enough time to come at a full trace. The temperature is increased progressively at 70-75 ^oC without external pressure. As in the cold saponification method, glycerin is not removed and remains into the soap. The high temperature accelerates and improves the percentage of saponification and also helps the use of various raw material which in other conditions would not be easily used in the mixture.

After the full trace, the soap paste remains in the cauldron, the temperature is increased to 100 ^oC and it is cooked for several hours until saponification is complete. During the cooking stage, we can correct the quantity of potassium hydroxide or the quantity of oils, if needed, by measuring the free alkali to ensure neutrality.

Then, under continuous stirring, we dissolve the soap paste with distilled water and we leave the soap solution to calm down. After a few days, we neutralize the soap solution, if necessary, and we correct its viscosity in the desirable limits.

Finally, the environmental cost of the semi boiled saponification process still remains small in comparison with the equivalent industrial method and moreover by this method no liquid waste is produced.