How to Dilute Essential Oils - Chart and Calculator - Aroma Farmacy

How to Dilute Essential Oils - Chart and Calculator

Essential oils have gained popularity for their numerous health and wellness benefits. These concentrated plant extracts are known for their therapeutic properties and have been used for centuries in traditional medicine. However, it is important to understand that essential oils are highly potent and should be used cautiously.

Understanding Essential Oil Dilution 

Pure Essential oils are highly concentrated plant extracts, and using them undiluted can lead to skin irritation, sensitization, or other adverse reactions. It's essential to recognize that a little goes a long way with these potent oils.

In this article, we will discuss the significance of proper dilution to ensure the safe and effective utilization of these powerful plant extracts.

Whether you're a seasoned essential oil user or just starting, understanding these guidelines is crucial for maximizing the benefits of essential oils without compromising your health.

Why essential oils need to be diluted

One of the key guidelines for safe and effective essential oil usage is the importance of dilution. 

Due to their strong concentrations, essential oils should never be used undiluted on the skin as they can cause irritation or sensitization, especially for those with more sensitive skin types.

Diluting essential oils in a carrier oil like coconut or almond oil helps to reduce the risk of adverse reactions while still allowing the oil to be effective. 

Essential Oil Dilution Guidelines 

When using essential oils, it is important to dilute them properly to ensure safe and effective use.

The general rule of thumb is to use a 2% dilution for adults and a lower dilution for children or those with sensitive skin. 

This means adding around 12 drops of essential oil for 30ml of carrier oil. However, recommended dilution ratios for different uses vary.

For Aromatherapy

A good rule of thumb for aromatherapy is 1-2 drops of essential oil per 30ml of carrier oil.

For Topical Application

On the other hand, for topical application, it is recommended to use a lower dilution ratio of 1-2 drops of essential oil per teaspoon(5ml) of carrier oil. This is especially important when applying essential oils to the skin, as they can be very potent and may cause irritation if not properly diluted.

For Diffuser 

When diffusing essential oils, it is advised to use a ratio of 3-5 drops of essential oil per 100 ml of water in the diffuser.

Following these guidelines will help to ensure that you are using essential oils safely and effectively, minimizing the risk of adverse reactions.

Important Factors Consider When Diluting Essential Oils

Factors to consider when determining dilution strength include age, health conditions, and sensitivity.

For Adults

For adults, a safe dilution ratio is typically 2-3%, which equates to 12-18 drops of essential oil per 30ml of carrier oil.

For Children & Elderly

However, for children, the elderly, or individuals with pre-existing health conditions, a lower dilution ratio is recommended to avoid any potential adverse reactions.

It is also important to take into account the specific essential oil being used, as some oils are more potent and may require a lower dilution ratio. 

Additionally, sensitivity to certain essential oils can vary from person to person, so it is crucial to perform a patch test before using any new oil at a higher concentration.

Methods of Dilution

Carrier Oils 

There are several methods of dilution, with the most common being the use of carrier oils. Different carrier oils can be used for dilution, each with their unique properties.

Fractionated coconut oil is a popular choice for dilution due to its light texture and long shelf life. Sweet almond oil is also commonly used, known for its nourishing and moisturizing properties.

Jojoba oil is a great option for those with sensitive skin, as it closely resembles the skin’s natural sebum.

These carrier oils can be used to dilute essential oils for topical application, making them gentler on the skin and helping to spread the essential oil over a larger surface area.

Steps to Dilute Essential Oils in Carrier Oils 

Diluting essential oils in carrier oils requires following a step-by-step method to ensure a proper blend.

  1. First, you need to choose the carrier oil that best suits your needs, such as coconut oil, almond oil, or jojoba oil.

  2. Next, determine the dilution ratio based on the specific essential oil and the intended use. A standard dilution ratio is 2-3% essential oil to carrier oil, which equates to about 12-18 drops of essential oil per 30ml of carrier oil.

  3. Measure out the carrier oil and add it to a clean, dry bottle or container.

  4. Then, add the calculated amount of essential oil drops to the carrier oil and mix well by gently swirling or stirring.

  5. It's important to label the bottle with the date and type of essential oil used, as well as the dilution ratio, for future reference.

Other Methods of Diluting Essential Oils 

Aloe vera 

Another method of dilution is using aloe vera gel to dilute essential oils for use in a spray bottle or as a soothing topical application for minor skin irritations. 

Distilled Water 

Distilled water can be used to dilute essential oils to create sprays or mists. The ratio of water to essential oil will depend on the intended strength of the final product.  

However, it is important to note that essential oils are not water-soluble, so they should be combined with a dispersant like a solubilizer (e.g. Polysorbate 20) before adding to water to ensure even distribution. 


Alcohol, such as vodka or rubbing alcohol, can also be used as a diluting agent for essential oils. This method is commonly used for creating homemade perfumes or room sprays.


Vinegar can be used to dilute essential oils for use in cleaning solutions or as a natural fabric freshener.

Lotions & Creams

  • One common method is mixing a few drops of essential oil with a carrier oil, such as almond or coconut, before adding it to the lotion or cream. This helps to distribute the essential oil evenly and prevents it from separating.

  • Another method is to emulsify the essential oil with a small amount of vegetable glycerin before adding it to the lotion or cream. This helps ensure the essential oil is evenly dispersed throughout the product.

When using any of these methods for dilution, it is important to research the appropriate dilution ratios to ensure safe and effective use of the essential oils.

Additionally, it is important to store diluted essential oil products in airtight containers in a cool, dark place to preserve their potency and prevent oxidation. 

These alternative methods of dilution allow for a variety of uses for essential oils beyond simply blending them with carrier oils. 

Essential Oil Dilution Ratios

Dilution ratios for different uses of essential oils are crucial in ensuring safe and effective application.

  • For massage, a general dilution ratio of 2-3% is recommended, meaning 12-18 drops of essential oil per 30ml of carrier oil.

  • For sensitive parts of the skin, such as the face or genitals, a lower dilution ratio of 1% is more appropriate.

  • For acne treatment, a slightly higher dilution ratio of 2-5% (11-30 drops) can be used, especially for spot treatments.

  • When it comes to acute conditions like infections, a higher dilution ratio of 5-10% (30-60 drops) may be necessary for more potent effects.

  • For one-time application on skin conditions, such as burns or rashes, a 5% dilution ratio is often sufficient.

It is important to remember that essential oils are powerful substances and should be used with caution.

Note:  Please be aware that the mentioned ratios are general and only provided for informational purposes. For specific usage, please consult an expert or reputable source to refer to the recipe and its dilution ratio.  

Essential Oil Dilution Calculator


{% render 'dilutioncalc' %}

Essential Oil Dilution Chart

For a better understanding, you can follow the measurements mentioned in the printable dilution chart. 

Want it in printed form for your fridge or everyday use and reference? 

Essential Oil Dilution Chart PDF Download 



essential oil dilution chart pdf download


Tips for safe essential oil use 

  1. Before using a new essential oil, it is important to perform a patch test to check for any potential allergic reactions. 

  2. Always dilute essential oils in a carrier oil before applying them to the skin, and never ingest them without proper guidance.

  3. Keep essential oils out of reach of children and pets, and store them in a cool, dark place to maintain their quality. 

  4. When using essential oils, it's important to take precautions when it comes to children, pregnant women, and pets. Always dilute essential oils before using them on children, and avoid certain oils altogether for pregnant women. 

  5. Following storage and handling guidelines for diluting essential oils is important to ensure safe usage.

  6. Essential oils should be stored in a cool, dark place and handled carefully to avoid skin irritation or adverse reactions. 


To conclude, when using essential oils, it’s crucial to remember the importance of dilution for safe and effective use. Essential oils are highly concentrated and can cause skin irritation or other adverse reactions if used undiluted.

Always dilute essential oils with a carrier oil, such as coconut or jojoba oil, before applying to the skin. It’s also important to perform a patch test before using a new essential oil, especially if you have sensitive skin.

Furthermore, it’s essential to follow recommended guidelines for each specific oil, as some may require different dilution ratios.  When using essential oils, it is important to always follow dilution guidelines for your safety and well-being.

Back to blog

Leave a comment

Please note, comments need to be approved before they are published.