Fragrance Mixing with Non-Alcohol Bases (DPG vs Fractionated Coconut Oil)

Subject: Fragrance Mixing Inquiry

Thank you for your questions regarding mixing alcohol-free fragrances.

1. Regarding making the mixture of fragrance oil and Reed Diffuser Base clear without alcohol: As the staff suggested, Dipropylene glycol (DPG) can be used. Mixing the fragrance oil with DPG first before adding it to the Reed Diffuser Base can help improve solubility and clarity, acting as a non-alcohol solvent.
2. Regarding a concentrated formula (75% fragrance oil, 25% DPG) for a rollerball perfume: While DPG can be used as a base for rollerball perfumes, a fragrance oil concentration of 75% is very high for direct skin application. Typical concentrations for perfume oils or rollerball perfumes range from 10% to 30%. Using a concentration as high as 75% may increase the risk of skin irritation or sensitization, depending on the specific fragrance oil used. It is generally recommended to use fragrance oil at lower concentrations for skin products.
3. Comparing Dipropylene glycol and Fractionated Coconut Oil regarding stickiness/residue: According to the staff, Dipropylene glycol may feel heavier on the skin compared to Fractionated Coconut Oil. However, they serve different purposes: DPG can help slow down fragrance evaporation (acting as a mild fixative), while Fractionated Coconut Oil does not significantly affect evaporation but provides a lighter skin feel and can be moisturizing for dry skin.
4. Regarding skin irritation or allergy from Dipropylene glycol: The staff stated that the chance of skin irritation from DPG is very low. Allergies are highly individual, and the likelihood of an allergic reaction to DPG is not significantly different from that of Fractionated Coconut Oil.