Adding Fragrance and Fixative to Glycerin Soap

Subject: Adding Fragrance to Glycerin Soap

Hello,

It's common for fragrance to not be very strong at 1% in soap, as some fragrance notes can evaporate or degrade in the soap base. Here are answers to your questions based on the information provided:

1. Fragrance Percentage: For glycerin soap, it is recommended to use fragrance at a concentration of 1-5% of the total soap base weight. Starting at 1% might be too low for some fragrances, so increasing it within this range should help.
2. Specific Fragrance Types: While the conversation doesn't specify particular fragrance types, it's true that some fragrances are more stable and perform better in soap bases than others. Using a fragrance specifically designed for soap or personal care products is often beneficial. Additionally, using a fragrance fixative is highly recommended.
3. Fragrance Fixatives: Fixatives used in fabric softeners might not be suitable or effective for soap. For bar soap like glycerin soap, Sugar Fix is recommended (instead of Last-Fix) because it is more heat resistant and easier to use.
4. Substances to Enhance Fragrance: Yes, fragrance fixatives like Sugar Fix can significantly help to enhance the longevity and perceived strength of the fragrance in your soap.
   • Usage Rate: Use Sugar Fix at 1-5% of the total formula weight.
   • Preparation: Sugar Fix needs to be dissolved at a warm temperature. Mixing it in at around 50°C is suitable and will not degrade the fragrance quality when done for a short period.
   • Mixing: While using a spatula is possible, ensure you mix thoroughly to evenly distribute the fragrance and Sugar Fix throughout the melted soap base before pouring. Thorough mixing helps ensure consistent scent distribution in the final product.

Using a higher percentage of fragrance (within the recommended range) along with a fixative like Sugar Fix should help achieve a stronger and longer-lasting scent in your glycerin soap.