Ingredients to Improve Perfume Longevity and Diffusion

Besides perfumer's alcohol, you can add ingredients called fixatives to your essential oil perfume to help the scent last longer and improve its diffusion (how well the scent spreads).

Fixatives are typically less volatile substances that help to anchor the more volatile fragrance components, slowing down their evaporation rate. This makes the perfume last longer on the skin or fabric.

Some examples of natural fixatives include various resins and absolutes. Based on our search, relevant ingredients that can act as fixatives include:

• Styrax Resinoid
• Labdanum Absolute
• Myrrh Absolute
• Benzoin Resinoid (available in different origins like Sumatra, UK, or China Liquid)

These materials not only help with longevity but can also add depth and complexity to the fragrance profile. The choice of fixative depends on the desired scent profile, as each fixative has its own unique aroma.

Additionally, the type and concentration of the diluent (like perfumer's alcohol or other carriers) can also affect the diffusion and overall performance of the perfume.