Surgraissage dans la Fabrication du Savon

Supergreasing in Soap Manufacturing

Two Approaches and Prevention of Skin Dryness

Soap making is a complex alchemy between oils, caustic soda and technique. Among the many aspects to consider, supergreasing stands out as a crucial step to ensure a gentle and nourishing soap for the skin.

▷ What is supergreasing soap? Why/how to use it.

1. Overgreasing by Adding Additional Oils

This method involves the incorporation of oils after the saponification process. Some popular oil choices for superfatting include sweet almond oil, avocado oil, or shea butter. These additions provide moisturizing and softening properties, providing the skin with additional care.

2. Supergreasing by Caustic Soda Reduction

Reducing the amount of lye in the formula is another approach. This means that some of the oils remain unchanged after saponification, thus preserving their benefits for the skin. Finding the right balance is crucial to avoid excessively soft soap.

3. Prevention of Skin Dryness

Superfatting plays a key role in preventing skin dryness. Supplemental or unprocessed oils provide additional hydration, preserving the natural skin barrier. Among the recommended choices, olive oil, coconut butter and sweet almond oil are known for their ability to maintain skin suppleness.


In short, superfatting in soapmaking offers creative flexibility while promoting substantial skin benefits. Whether you choose to add specific oils or play with lye proportions, the ultimate goal is to create a soap that cleans while preserving the skin's natural moisture. Experiment, find the perfect balance and treat your skin to a luxurious and nourishing soapy experience.

Yours truly.

Natalie Marchand

QuinteSens soap factory

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