What is a superfat or Lye discount

Soap making is not for dummies

What is Superfatting in Soap Making?

Superfatting is a technique used in soap making to add extra oils or fats beyond what is necessary to saponify the lye. This process results in a soap that is more moisturizing and gentle on the skin.

Understanding Saponification

Before delving into superfatting, it's important to understand the saponification process. Saponification is the chemical reaction that occurs when fats or oils are mixed with an alkali, typically lye (sodium hydroxide for bar soaps). Each type of fat has a specific saponification value, which indicates the amount of lye needed to completely react with the fat.

The Role of Superfatting

Superfatting involves adding a percentage of oils that will not be saponified ie they remail as nourishing oils. This is beneficial for several reasons:

• Moisturizing Properties: The additional oils remain in the final product, providing extra hydration to the skin.

• Gentler on Skin: Superfatted soaps are less likely to cause dryness or irritation, making them suitable for sensitive skin.

• Improved Lather: Some oils can enhance the lathering properties of the soap, contributing to a richer and creamier foam.

• Customization: Soap makers can tailor the superfatting level to achieve different skin benefits based on the oils used.

How to Superfat Soap

To superfat soap, follow these steps:

1. Calculate Lye Amount: Determine the amount of lye needed for the total oils in your recipe using a saponification chart.

2. Decide on Superfat Percentage: Common superfat levels range from 5% to 10%, depending on the desired properties of the soap.

3. Adjust Oils: Calculate the amount of additional oil to add. For example, if your recipe calls for 1000 grams of oils and you want to superfat at 5%, you would add an extra 50 grams of oil.

4. Mix and Saponify: Follow your usual soap-making process, ensuring to mix in the superfat oils after reaching trace, or include them in the total oil weight before calculating lye.

Choosing Oils for Superfatting

When selecting oils for superfatting, consider the following:

• Olive Oil: Known for its moisturizing properties and is often used for high superfat levels.

• Coconut Oil: Adds lather but can be drying if used in excess; balance with other oils.

• Shea Butter: Provides a rich, creamy texture and is highly moisturizing.

• Avocado Oil: Excellent for skin nourishment and adds a luxurious feel to soap.

Conclusion

Superfatting is an essential technique in soap making that enhances the moisturizing qualities of the final product. By carefully calculating the amount of additional oils and selecting appropriate fats, soap makers can create customized bars that cater to various skin types and preferences.