Preventing Fragrance Fading in Cream Formulation

Regarding the fading fragrance in your cream, here's a summary of the discussion and recommendations:

• Fixatives: To help the fragrance last longer, you can use a fixative. Propylene Glycol is recommended for skin cosmetic products, not Dipropylene Glycol. Butylene Glycol can also be used.
• Usage: Mix the fragrance with Propylene Glycol first before adding it to the cream.
• Concentration: A recommended starting point for Propylene Glycol is around 5% of the total formula. If your formula already contains Pentylene Glycol (which is less ideal for this purpose but can contribute), the total combined percentage of glycols used as fixatives could be around 5-7%.
• Timing: Add the fragrance mixture in the final step of your cream-making process. It's crucial to avoid heat, as heat accelerates fragrance evaporation.
• Pentylene Glycol: While Pentylene Glycol is not the primary recommendation for fragrance fixing (it's better for preservative boosting and more expensive), if it's already in your formula, you might adjust the amount of Propylene Glycol accordingly, keeping the total glycol percentage in the suggested range.
• Fragrance Composition: Another way to improve fragrance longevity is by adjusting the fragrance blend to include more slow-evaporating molecules. This is a more complex approach and might require professional analysis of the fragrance composition.