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The Science Behind Carrier Oils: How They Work with Essential Oils

by:Puraeo      2023-10-19

The Science Behind Carrier Oils: How They Work with Essential Oils


Carrier oils play an essential role in the world of aromatherapy and the use of essential oils. While essential oils are potent and concentrated plant extracts, carrier oils serve as vehicles for diluting and delivering these oils to the body. This article explores the science behind carrier oils and their crucial role in ensuring effective utilization of essential oils.

Understanding Carrier Oils:

1. Composition and Extraction of Carrier Oils:

Carrier oils are derived from plants and typically obtained through cold-pressing or maceration processes. Each carrier oil has its unique composition, with fatty acids, vitamins, and other beneficial compounds. Depending on the source plant, carrier oils can be extracted from various parts, including seeds, nuts, fruits, and even flowers.

2. Properties of Carrier Oils:

Carrier oils have distinct properties that make them suitable for blending with essential oils. Common carrier oils include jojoba, sweet almond, coconut, avocado, and grapeseed oil. These oils are usually odorless or possess a mild scent, allowing the fragrance of the essential oil to shine through. Additionally, they have a relatively long shelf life, providing stability to essential oil mixtures.

Interaction Between Carrier Oils and Essential Oils:

1. The Role of Carrier Oils in Dilution:

Essential oils are extremely concentrated and can cause adverse effects if used undiluted or in excessive amounts. Carrier oils act as diluting agents, reducing the concentration of essential oils to a safe and manageable level. Dilution also helps in promoting even distribution of essential oils across the skin, enhancing their absorption and effectiveness.

2. Enhancing Absorption and Bioavailability:

Essential oils are volatile and evaporate quickly when exposed to air. However, when combined with carrier oils, they become more stable and less likely to evaporate rapidly. Carrier oils act as emollients, helping essential oil mixtures penetrate the skin's barrier and be absorbed into the bloodstream. This enhanced bioavailability ensures that the therapeutic properties of essential oils are effectively delivered to the body.

Choosing the Right Carrier Oil:

1. Skin Type and Absorption:

Different carrier oils have varying rates of absorption and comedogenicity, making it essential to choose the most suitable carrier oil for individual skin types. For example, jojoba oil closely resembles the skin's natural sebum, making it a popular choice for most skin types. On the other hand, heavier oils like coconut and avocado oil may be better suited for those with dry or mature skin.

2. Therapeutic Properties:

While carrier oils primarily serve as neutral carriers for essential oils, they also possess their unique therapeutic properties. Some carrier oils, such as coconut and sweet almond oil, have moisturizing and nourishing effects on the skin. Others, like grapeseed oil, have antioxidant properties that can benefit the skin. Consider selecting carrier oils that complement the desired effects of the essential oil being used.

Safety Considerations:

1. Patch Testing:

It is crucial to perform a patch test before using any carrier oil or essential oil mixture on a larger area of the body. This test helps identify any potential allergic reactions or sensitivities. Apply a small amount of the diluted oil blend to a small patch of skin and observe for any adverse reactions over 24 hours.

2. Proper Storage:

Carrier oils, like essential oils, are sensitive to heat, light, and air exposure. Store carrier oils in dark, glass containers away from direct sunlight and at cool temperatures. This ensures the longevity and quality of the carrier oil for future use.


The science behind carrier oils demonstrates their indispensable role in the field of aromatherapy and essential oil utilization. By acting as diluting agents, enhancing absorption, and offering their therapeutic properties, carrier oils enable the safe and effective use of essential oils. Choosing the right carrier oil, understanding their properties, and considering safety guidelines are crucial steps in harnessing the power of essential oils for holistic well-being.

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