How to Stabilize Fragrance in Lotion

To help the fragrance in your lotion remain stable and prevent it from fading or changing over time, consider the following factors and techniques:

1. Choose Stable Fragrances: Some fragrance notes and types are inherently more stable than others. Citrus and light floral notes tend to be more volatile and can fade faster, while woody, oriental, and some floral notes (like jasmine) can be more stable. However, stability also depends on the specific chemical composition of the fragrance oil.

2. Consider pH: The pH of your lotion can significantly affect fragrance stability. Extreme pH levels (very acidic or very alkaline) can break down fragrance compounds. Ensure your lotion's pH is within a suitable range for both the skin and the fragrance, typically between 4.5 and 7.

3. Protect from Light and Heat: Light (especially UV light) and high temperatures are major culprits for fragrance degradation. Store your lotion in opaque or amber packaging and keep it away from direct sunlight and heat sources.

4. Minimize Air Exposure: Oxygen can cause oxidation of fragrance components, leading to changes in scent. Use packaging that minimizes air exposure, such as pumps or tubes, rather than wide-mouthed jars.

5. Use Antioxidants: Adding antioxidants to your formulation can help protect fragrance compounds from oxidation. Common cosmetic antioxidants include Tocopherol (Vitamin E) or BHT.

6. Consider Fixatives: While more common in perfumes, certain ingredients can act as fixatives in lotions, helping to slow down the evaporation of volatile fragrance notes and improve overall longevity. However, this is more complex in emulsion systems like lotions.

7. Check for Ingredient Compatibility: Some ingredients in your lotion base can react with or absorb fragrance compounds, reducing their intensity or altering the scent. Common problematic ingredients might include certain emulsifiers, surfactants, or active ingredients. Testing small batches is crucial.

8. Proper Concentration: Using the recommended concentration for the specific fragrance oil is important. Too low a concentration may fade quickly, while too high a concentration might not necessarily improve stability and could cause skin sensitivity.

By paying attention to these factors during formulation and storage, you can significantly improve the stability and longevity of the fragrance in your lotion.