How to Improve Fragrance Diffusion and Longevity in Reed Diffusers

Regarding your questions about making perfume diffuse well and evaporate slowly when using Reed Diffuser Base Type 1:

1. Improving Fragrance Diffusion

You are using Reed Diffuser Base (Type 1), which is specifically designed as a base for dissolving fragrance oils to be used with reed diffusers. This base helps the aroma spread effectively without leaving residue.

The recommended usage rate for this base is typically around 70-75% base mixed with 25-30% fragrance oil.

You mentioned adding about 15% alcohol and experiencing a stinging sensation. The description for Reed Diffuser Base Type 1 states that it does not contain alcohol or DPG. Adding alcohol might alter the intended properties of the base and could be the cause of the stinging sensation you experienced. It is generally recommended to use the Reed Diffuser Base Type 1 as is with your fragrance oil, following the suggested ratios, unless the fragrance oil specifically requires alcohol for solubility before mixing with the base.

If you are using the base at the recommended ratio without added alcohol and still find the diffusion weak, consider the quality or type of the fragrance oil itself, or the reeds being used.

2. Slowing Down Fragrance Evaporation

To make the fragrance evaporate more slowly and last longer, a common ingredient used as a fixative is Dipropylene glycol (DPG). DPG is known for its ability to dissolve fragrance oils well and act as a fixative, slowing down the evaporation rate and extending the scent's longevity.

There might be conflicting advice regarding DPG because its suitability depends on the specific base or formulation being used. While DPG is an effective fixative in many fragrance applications, the Reed Diffuser Base (Type 1) is formulated without DPG. This means that Reed Diffuser Base Type 1 and DPG are different types of bases or additives used for fragrance. You would typically use one system or the other, or formulate a system that incorporates DPG if not using a pre-made base like Type 1. If you are using Reed Diffuser Base Type 1, adding DPG might not be compatible or necessary, as the base is designed to function on its own. However, if you were creating a different type of fragrance product or using a base that is compatible, DPG is indeed used to slow evaporation.

In summary:

• For better diffusion with Reed Diffuser Base Type 1, ensure you are using the correct ratio of base to fragrance (70-75% base, 25-30% fragrance) and avoid adding alcohol unless necessary for fragrance solubility.
• To slow down evaporation in fragrance products, Dipropylene glycol (DPG) is a commonly used fixative. However, Reed Diffuser Base Type 1 does not contain DPG and is formulated differently.