Blending and Diluting E.O.'s


Learning to blend to get the utmost aroma and effectiveness of your blend involves many aspects. Sometimes these steps get muddled in the “professional” terminology or lost in translation. I hope this helps to guide you along in blending. Although I love and use my single essential oils, essential oils can become even more effective therapeutically when blending. Before we begin blending, we need to understand dilution rates. Essential oils need to be treated like medications, with respect and paying close attention to safety guidelines. First, we need to understand that essential oil dilution is important for two safety reasons. One, to avoid skin reactions: irritation, sensitization and phototoxicity. Two, to avoid systemic toxicity, such as fetotoxicity, hepatotoxicity, carcinogenicity and neurotoxicity. Adverse skin reactions are obvious when they happen, but systemic toxicities may not be. Skin reactions are totally dilution-dependent, and safety guidelines exist to minimize risk.

There are many factors that influence the dilutions rates that need to be kept in mind. It's important to limit the amount of essential oil used in aromatherapy. When we sese terms like "maximum dermal application" that is referring to an adult with healthy skin. With this in mind, you must adjust either per safety suggestions or at your own discretion. It's equally necessary to limit dermal dosing for essential oils that contain, for example, carcinogenic, neurotoxic, or phototoxic constituents. The total quantity of essential oil absorbed into the body from dermal application or massage varies according to several factors:

  • the overall amount of oils and types of oils being applied

  • the dilution rate of the essential oils

  • the choice of carrier used

  • the health, warmth and moisture of the skin and size of the area the oils are used on

  • the age of the client

  • and if the skin is washed off after application

Some simple dilution guidelines to follow when blending your oils.

1. Use for issues that are emotional in nature, for pregnant or nursing women, for anyone with a compromised immune system, for sensitive skin and for using directly on the face. Use 1% dilution which equals 9 drops total of essential oil to 1 oz. (30 ml) of carrier. If using more than one oil, determine the correct amount of each to equal 9 drops. And this is dependent on the oil. Some oils are not safe for those pregnant, nursing, children and sensitive skin as well as underlying health issues.

2. For massage oils and