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What is SOUJI?

Reciclar aceite con souji

The simple definition: SOUJI is a liquid based on minerals and vegetables that when mixed in the correct proportions with used cooking oil and shaking the mixture for 1 MINUTE, it becomes a cleaner / detergent, 96% less polluting than a common detergent, with a pleasant aroma and without any risk of manipulation.

The idea is born from the traditional process of making natural soap but with significant differences:

  • Does not contain caustic soda, or any corrosive agent
  • Does not require an external heat source
  • The result has a creamy texture and a pleasant aroma
  • It only takes a minute of your time.



Pero SOUJI es mucho más…

SOUJI is a new mode of consumption. It is the only product on the market with which you can convert, in just one minute and without risks, a highly polluting waste into a useful and sustainable product.

SOUJI is innovation. The chemical process of “saponification” that occurs when mixing used oil and SOUJI has never been achieved in this way before and its development has been more than 3 years of research, uncertainty and work.

SOUJI is sustainability. The entire project around SOUJI is focused on maintaining the concept of sustainability with the planet, as demonstrated by in all of our philosophy including the packaging.

SOUJI is evolution. Our purpose is to improve at every step forever in line with the planet. We continue to invest in continuous research to offer a product that is increasingly perfected, with more uses and formats.

SOUJI is future. Oil is one of the most polluting wastes on the planet, its impact on the aquatic environment is huge and its consume  is increasing year by year To avoid its mismanagement, recycling it from the source, is to contribute to having a better future.

SOUJI means “cleaning” in japanese language and that is exactly what  means, because what we want to help to clean  the world, trying to get a cleaner world.

Jabón Souji

And who is behind SOUJI? We introduce ourselves …

sergio y cata escaleras 3


We are two of us: Sergio and Catalina, two young entrepreneurs who following a dream, managed to achieve SOUJI.

SOUJI was born from the mind of Sergio, who after suffering the problem of what to do with used oil at home and seeing the available options and their problems decided to look for solutions. At that moment he remembered the traditional method of making homemade soap to give this residue a second life, but he found that it also had some drawbacks …

So he decided to invent something new that would get the same result, but in a much faster, easier and safer way. Adapted to the current pace of life and to all audiences.

In this way she started working and went to the IQS (Chemical Institute of the Ramón Llull University of Barcelona), fell in love with Catalina not only with her idea, but also with her 😉   and after 3 years of research SOUJI was born.

Now we work hard to continue growing, improving and expanding markets. Contributing a grain of sand to the cleanliness and good use of world resources.

Will you help us in our challenge? Without you we can’t get it.







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