Soap making





Soap making

Digital skill covered

Activity filmed with a tablet

Learning objectives

The purpose is to learn how to make homemade soap


Participants are divided into fifteen groups of two-three people. Each group was given two bowls, one with 750g of recycled olive oil and the other one with 102 g of sodium hidroxide. This sodium must be dissolved into water. First of all, participants had to mix up the sodium with the water carefully. The solution must be slow so as not to produce vapour. Then, after letting the solution rest for some minutes, which is called caustic soda, this mix is added to the recycled oil stirring quickly, but pouring the soda very slowly. At that moment, the mixture turns into soap. This reaction, although it is practically instant, won’t be completed until the components have been mixed up very well. Once this is achieved, the resulting modelling clay is placed in moulds and wait for a month to be used as the solidification is a very slow process. to give scent, some essences and food flavourings were added.

Learning outcomes

By the end of the session the learners will be able to understand:

-The process of soap making

-to do it themselves

-to learn how to recycle cooking oil

Variables to take into account (e.g. materials, equipment)
  • instructors: 2 teachers

  • equipment: recycled oil, bowls, caustic soda, salt, essences.

Recommended number of people

35 people in small groups – 2-3 people

Previous knowledge and skills required for participation

Most of the participants are immigrant women so they are curious about homemade products

Recommended duration

2 hours approximately

References and other useful sources