How to Dilute Essential Oils Safely + 5 DIY Recipes

QUICK SUMMARY

To dilute essential oils, mix them into a carrier oil before they touch your skin: 2 percent is the everyday adult dilution for body care, which is 12 drops per ounce of carrier oil, 6 drops per tablespoon, or 6 drops in a 10 ml roller bottle. Use 0.5 percent (3 drops per ounce) for children under three and 1 percent (6 drops per ounce) for children three to ten, the face, and sensitive skin, while remedies run higher: 3 to 5 percent (18 to 30 drops per ounce) for chronic aches and pains and 5 to 25 percent for acute problems for up to a week. Water, witch hazel, salt, and vodka do not dilute essential oils, so sprays need high-proof alcohol and baths need a soap or bath base first.

We love essential oils because incorporating them into our lives can help us achieve a better degree of clean living. Diluting essential oils at the right level for each use is one of the basic standards of safe use, especially when you apply them to the body. See our free downloadable essential oil dilution chart to keep the numbers on your fridge.

Below you will find the dilution chart we use in our own home, the step-by-step method, what to do when a recipe calls for water, and five of our favorite DIYs made the right way.

Essential Oil Dilution Chart

A dilution percentage tells you how much essential oil is in the whole finished blend. A 2 percent dilution means the blend is about 2 percent essential oil and 98 percent carrier oil.

Here are the numbers from our book, The Essential Oils Apothecary. There are 2 tablespoons in 1 fluid ounce, and a standard roller bottle holds 10 ml, or about 2 teaspoons.

These are home estimates, not laboratory measurements, because drop size changes from oil to oil and bottle to bottle. More on that in the step-by-step section below.

Dilution by Age

Children need gentler blends than adults. In our book, we put it simply: “0.5 percent is for children under three years old. 1 percent is for children three to ten years old. 2 to 3 percent is the standard adult dilution and for children over ten years old.”

Some oils carry their own limits on top of the chart. Oils high in 1,8-cineole and menthol, such as eucalyptus and peppermint, call for extra care around the faces of children under three. “Personally, we have not had any issues with using heavily diluted peppermint on or around our children, nor have our closest colleagues,” but we still stick with the children’s dilutions above for little ones.

Dilution by Use

Age is only half the question. The other half is what you are using the blend for, and here the book’s tiers run from gentle face care all the way to short-term remedies.

0.5 to 1 percent: For children, the face, and sensitive skin like genitals and underarms. A 1 percent blend is also commonly used for long-term daily application, pregnancy-conscious blends, and older adults.

Examples include tea tree for acne and frankincense in a facial toner.

2 percent: The book calls this the “Standard adult dilution for most DIY applications.” This is your everyday strength for body oils, massage oils, lotions, creams, and salves you use day in and day out.

Ideal for many lotions, creams, salves, balms, and body oils. Examples include geranium, helichrysum, and chamomile.

3 to 5 percent: For chronic conditions like aches and pains. The roll-on remedies in our book use 12 drops of a blend in a 10 ml roller, which is roughly 4 percent.

5 to 25 percent: For acute conditions like burns and cuts, and for treating a specific problem for up to one week at a time. Do not go above 25 percent in a roller bottle.

Examples include targeted blends with lavender, sweet orange, or tea tree.

25 percent and up: Use with great care and only for a very short period of time. Anything at 50 percent or higher belongs only under the supervision of a trained health-care provider.

A few oils have a lower ceiling than their tier. Our book flags wintergreen: applying more than a 3 percent dilution on the skin is beyond its maximum dermal dose, and it should never be ingested.

Safety Tip: Cold-pressed lemon, lime, grapefruit, and bergamot oils are known to be phototoxic, so if you use them in a leave-on blend, choose steam-distilled lemon and lime or bergaptene-free bergamot, or avoid direct sunlight for at least 12 hours if your skin is prone to a photosensitive reaction.

How to Dilute Essential Oils, Step by Step

Essential oils are highly concentrated plant compounds that pack a super punch of therapeutic benefits. To put this into perspective, it takes roughly three pounds of lavender flowers to distill down to an itty-bitty 15 ml bottle of essential oil. Imagine three pounds!

While there is a time and a place for neat application, the smart way to apply oils topically is to dilute them first. Here is how we do it:

1. Pick your dilution from the chart above, based on who is using the blend and what it is for.
2. Measure your carrier oil into a clean glass bottle or roller: 1 ounce (2 tablespoons), 1 tablespoon, or 10 ml (about 2 teaspoons).
3. Add the essential oil drops from the chart. For a 2 percent body oil, that is 12 drops in 1 ounce.
4. Cap it and roll or shake the bottle gently to blend, then label it with the oils and the date.
5. Patch test before you use a new blend over a large area.

Our book puts the last step plainly: “Always do a ‘skin patch’ test prior to applying new essential oils on your skin.” Put a little of a 1 percent blend on the back of your hand and wait ten minutes. No bumps, burning, or rash is a good sign that you can scale up.

Choosing a Carrier Oil

Carrier oils are nonvolatile plant oils that blend easily with essential oils, because both are fat-loving substances. Popular carrier oils include coconut oil, olive oil, sweet almond, jojoba, avocado, apricot, and sunflower.

Most carrier oils have their own health benefits, and our carrier oil guide walks through which one to pick for each job. For roller bottles we like jojoba and fractionated coconut oil because they absorb quickly.

For body oils, our family’s default is Mama Z’s Oil Base, a blend of coconut, sweet almond, jojoba, and vitamin E oils. Add 12 drops of essential oil per ounce of the base and you have a 2 percent body oil.

Where to Apply Diluted Oils

You may have heard that rubbing oils on the soles of your feet is the fastest way into the body. Our book answers that myth directly: “This is not actually true. Research has determined that this is the order of areas of the body where the skin is most permeable.” That order runs from the genital region, to the head and neck, the trunk, the arms, and finally the legs and feet.

A 2022 systematic review in the Journal of Toxicology and Environmental Health pulled together eight laboratory studies of human skin from 15 body sites. In every study that compared them, scalp skin let more through than abdominal skin, and scrotal skin let more through than skin from the torso. (1)

So for a whole-body effect, apply your blend over the abdomen, chest, and neck. And because the most absorbent areas are also the most sensitive, keep the face and genitals at 0.5 to 1 percent. Around the vagina and rectum, never use more than a 1 percent dilution, and steer clear of the hot oils like cinnamon, oregano, thyme, and clove.

Measuring Drops

Our chart uses easy round numbers for home blending. Real drops vary: studies summarized by the Tisserand Institute found anywhere from about 20 to 40 drops per milliliter, depending on the oil and the dropper insert. (2)

For a small family DIY, counting drops is practical. For larger batches, products you plan to sell, or blends near an oil’s dermal maximum, measure by weight with a scale accurate to 0.01 gram.

Why Dilution Matters: What the Research Shows

Dilution is not about fear. It is about getting the benefit of the oil without asking your skin to carry more than it needs, and the safety research is clear that strength is what drives skin reactions.

In the words of the Tisserand Institute’s dilution guide, “the greater the concentration of essential oil, the greater the risk of an adverse skin reaction.” The same guide lists 3 to 10 percent for pain-relief roll-ons and 2 to 10 percent for acne spot treatment and wound care, which lines up with the remedy tiers in our book. (3)

Here is the good news: true allergy to essential oils is uncommon. A 2022 study from Germany’s Information Network of Departments of Dermatology looked at 10,930 skin patients who were patch tested with twelve essential oils between 2010 and 2019. Only 8.3 percent reacted to at least one oil, and only six oils caused reactions in more than 1 percent of people: ylang ylang (3.9 percent), lemongrass (2.6), jasmine absolute (1.8), sandalwood (1.8), clove (1.6), and neroli (1.1). (4)

The researchers concluded that “Sensitization to EOs occurs, albeit infrequently in most cases.” The people at higher risk were massage therapists and cosmeticians, whose hands are in oils all day long. That is exactly why everyday body care stays at 2 percent.

A 2023 French study points to the same lesson. Dermatologists followed 42 people who developed allergic contact dermatitis from essential oils they used themselves, mostly lavender, tea tree, and ravintsara, and eight of them needed hospital care. Only a third had been given any advice on how to use their oils when they bought them. (5)

That is the gap this guide is here to fill. Used at the right dilution, essential oils are among the gentlest tools God has given us.

How to Dilute Essential Oils in Water-Based DIYs

Carrier oils work beautifully for skin blends because like dissolves like. Real life is not always that simple, though. Sprays, toners, baths, and gels all contain water, and our book reminds us why that matters: “Do remember that oil and water do not mix, so simply adding a drop to water will leave that drop undiluted.”

A floating droplet of essential oil is still full strength when it lands on your skin. So for anything water-based, the oil needs a partner that holds it in the water: high-proof alcohol, a soap or solubilizer, or a prepared base.

What Does Not Dilute Essential Oils

When I first started learning about essential oils, some of the information was misleading or incorrect. Many ingredients promoted in online DIY recipes do not blend with essential oils the way people think they do.

On their own, these do not reliably dilute or disperse essential oils in water: distilled or deionized water, witch hazel, hydrosols, ordinary vodka, sea or table salt, Epsom salts, magnesium oil, baking soda, sugar, aloe vera juice, pure aloe gel, glycerin, milk, honey, and peroxide.

A few distinctions matter:

• Witch hazel: Even witch hazel containing about 14% alcohol is still mostly water and does not reliably solubilize essential oils.
• Vodka: Ordinary vodka is only 40 to 50 percent ethanol, which is too low to dissolve essential oils properly.
• Salt and baking soda: They dissolve in bathwater and release the essential oil, leaving it to float or contact the skin.
• Carrier oil: It safely dilutes the essential oil but still floats in bathwater, which can make the tub slippery.
• Shaking: It temporarily breaks oil into smaller droplets but does not create lasting solubility or preservation.

This does not mean honey, milk, glycerin, or carrier oils have no place in a complete recipe. It means they should not be treated as essential-oil dispersants.

Sprays and Toners: Dissolve in High-Proof Alcohol First

Add the essential oils to the alcohol first and let them dissolve before you slowly add distilled water, hydrosol, or witch hazel. For a simple room or pillow spray, that one step makes all the difference.

For the alcohol to do its job, it needs to be strong. A Tisserand Institute article on alcohol blending recommends 95 to 100 percent ethanol, with 151 proof (75.5 percent) as the bare minimum, and notes that very heavy, resinous oils like myrrh may never fully dissolve. (6)

Use ethanol intended for food, cosmetic, or perfumery use in body and linen products. 91% isopropyl alcohol can dissolve many essential oils and is useful for sanitizing tools or selected household formulas, but it is more drying and is not my first choice for facial toner, body spray, or bedding.

Alcohol and essential oils are flammable and can damage finished wood, stone sealers, painted surfaces, some plastics, and manicures. Keep them away from flame and test household sprays in an inconspicuous area.

Baths: Use a Soap or Bath Base

Salt is not a carrier for essential oils, and neither is a splash of carrier oil, which simply floats on the surface and clings to the tub and your skin. (7) For a single-use bath, liquid soap does the job.

Mix the essential oils thoroughly into enough liquid castile soap, then add the mixture to running bathwater and swish the water. A good rule of thumb is 5 to 20 drops of essential oil per tablespoon of your bath base, and the same rule holds when you add Epsom salts to a detox bath.

Cosmetic-grade solubilizers such as polysorbate 20 are another option for baths and mists. The ratio varies by oil and product, so follow the supplier’s directions instead of assuming a one-to-one ratio. (7)

Lotions and Gels: Start With a Prepared Base

Many supply companies carry premade lotions, creams, washes, and gels meant to be customized with essential oils. A reputable supplier will tell you the maximum percentage of essential oil the base can take, whether it is meant for leave-on or rinse-off use, and how to mix it in.

Thickened aloe gels differ from pure aloe gel in that they may contain a thickener like a carbomer or xanthan gum, along with a compatible solubilizer and preservative. Xanthan gum on its own is a thickener, not an essential-oil solubilizer and not a preservative.

Water-based body products need special care. The FDA lists contaminated water or ingredients, an ineffective preservation system, poor packaging, poor storage, and consumer use, such as dipping fingers into a jar, as ways harmful bacteria or fungi get into cosmetics. (8) Make small batches, use distilled water and clean tools, choose pumps or sprays over open jars, and discard the product if the smell, color, or texture changes.

Can I ingest essential oils?

Never drop essential oils into water or take them neat (undiluted) by mouth. Internal use calls for an edible carrier, a capsule, and the right dose. Learn more about how to ingest essential oils here.

Here is a brief list of products often made in the home, done just a little better using the principles for diluting essential oils above.

Witch Hazel Facial Toner

This delightful toner is refreshing and clarifying. Your skin will love being pampered without the use of toxins!

Witch Hazel Facial Toner

Author Mama Z

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Quantity

2x4x6x

Ingredients

• 6 drops essential oils*
• 1½ teaspoons 190 proof alcohol OR the highest proof alcohol you can find
• Unscented witch hazel

Supplies

• Glass measuring cup or jar for mixing
• 2-ounce glass spray bottle

Instructions

 

• Add the essential oils and alcohol to a glass measuring cup or jar. Gently stir to mix.
• Pour into a glass spray bottle, then fill the bottle the rest of the way with witch hazel, leaving enough room to replace the lid.
• Replace the top and shake to mix.
• To use, spray toner on a cotton round and gently swipe over the face.

Notes

*CUSTOMIZE YOUR SKINCARE WITH ESSENTIAL OILS

Sensitive skin – geranium, helichrysum, rose, lavender

Acne-prone – tea tree, lavender, orange, rosemary

General healthy complexion – lavender, frankincense

Step One: Add Essential Oils

Place the essential oils and alcohol in a glass measuring cup or jar. Stir to mix. See the above notes for customizing the oils to fit your skin needs.

For a facial product, use the ethanol specified in the recipe or another cosmetic-appropriate ethanol. Do not substitute isopropyl rubbing alcohol.

Step Two: Tone Your Face

Gently stir the mixture to combine and pour into a dark glass spray bottle. Fill the bottle the rest of the way with witch hazel. Store away from light.

To use, douse a cotton round with the mixture and gently wipe over the face. No need to rinse!

Patch test before using the toner over your entire face. Avoid the eyelids, lips, nostrils, and broken or irritated skin, and stop if the toner causes burning, redness, or dryness. Make a small batch, keep the bottle clean, and use it quickly.

Shot Glass Relaxation Bath

Need some R&R? Try our Shot Glass Relaxation Bath! This DIY comes together in minutes.

Shot Glass Relaxation Bath

Author Mama Z

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Quantity

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Ingredients

• 10-20 drops essential oils*
• Organic unscented liquid castile soap

Supplies

• Shot glass

Instructions

 

• Add the essential oils to a shot glass.
• Fill the glass the rest of the way with liquid castile soap and stir to mix.
• To use, pour the shot under running water. Relax and enjoy!

Notes

*Some of our favorite essential oils for relaxation and stress relief are suitable for use in a bathtub. (Avoid hot oils with a low dermal limit.)

These include geranium, ylang-ylang, clary sage, marjoram, rose, and Roman chamomile.

Step One: Add Essential Oils

Add the essential oils of your choice to a shot glass. See the notes above for suggestions on selecting relaxing EOs.

Step Two: Add Liquid Soap

Fill the rest of the glass with castile soap. This helps the EOs disperse more evenly for a single-use bath. Slowly stir to combine.

Your mixture should look milky, like in the photo above. To use, add the shot to running bathwater and swish the water before getting in. Enjoy your relaxing bath!

Skip the hot oils such as cinnamon bark, clove, oregano, and thyme in a full-body bath. The tub may get slippery, so use a bath mat and rinse the tub afterward. This is an adult recipe; do not use it for babies.

Quick Countertop Cleaner

My Quick Countertop Cleaner gets the job done naturally! It smells incredible and degreases the roughest surfaces.

Quick Countertop Cleaner

Author Mama Z

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Quantity

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Ingredients

• 36 drops essential oils*
• 2 tablespoons organic unscented liquid castile soap
• Purified OR distilled water

Supplies

• Glass spray bottle

Instructions

 

• Add the essential oils and liquid soap to a spray bottle. Mix to combine thoroughly.
• Fill the bottle the rest of the way with distilled water. Replace the top and shake to mix.
• Use as you would a conventional kitchen cleaner.

Notes

*Immune Support or antimicrobial essential oils to choose from include clove, lime, peppermint, tea tree, lavender, eucalyptus, oregano, lemongrass, orange, geranium, and citronella.

You can also make our Immunity Blend! In a 5 ml glass bottle (reuse an old EO bottle!), combine equal parts cinnamon, clove, eucalyptus, rosemary, orange, and lemon essential oil

Step One: Mix the Essential Oils and Soap

Add the essential oils of your choice and liquid soap to a spray bottle. See the notes above for tips on choosing antimicrobial EOs.

Gently mix to combine thoroughly.

Step Two: Add Water

Fill the bottle the rest of the way with distilled water. Replace the top and shake gently to mix.

Use as you would a conventional kitchen cleaner. Enjoy your clean counters!

This formula is a cleaner for everyday dirt, grease, and grime. The EPA explains that cleaning removes dirt and organic matter from surfaces using soap or detergents, while sanitizing and disinfecting kill germs with registered products. (9) After raw meat, clean first with this spray and then follow up with a disinfectant used according to its label.

Test the cleaner before using it on natural stone, unfinished wood, or specialty countertops, and wipe food-contact surfaces with a clean damp cloth afterward.

Sunburn Relief Gel

Our Sunburn Relief Gel is a summer must! It soothes hot, uncomfortable skin and provides a refreshing cooling sensation.

Sunburn Relief Gel

Author Mama Z

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Quantity

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Ingredients

• ¼ teaspoon xanthan gum
• 4 ounces aloe vera gel
• 48 drops essential oils*

Supplies

• Mixing bowl
• Glass jar for storage

Instructions

 

• Whisk the xanthan gum into the aloe vera gel until smooth.
• Add the essential oils and mix well.
• Store in a glass jar in the refrigerator.
• To use, spread over sunburned skin.

Notes

*I like using equal parts lavender and peppermint in this recipe. Lavender soothes burnt skin and can heal sunburn, and peppermint is instantly refreshing!

For children, reduce the number of drops to 24.

Step One: Thicken the Aloe Vera Gel

Whisk the xanthan gum into the aloe vera gel until smooth.

Xanthan gum changes the texture, but it does not dissolve the essential oils or preserve the gel. A prepared, preserved aloe gel made for customizing is the most dependable starting point.

Step Two: Add the Essential Oils

Add the essential oils of your choice and mix well. See the above notes for my favorite combination.

Stir the mixture well until it turns a milky color. Store in the fridge and apply as needed. If you see oil droplets or separation, remake it with a prepared gel or a cosmetic solubilizer before you spread it over a large area.

Use this gel for mild sunburn on intact skin. Blistering, a large burn, or a burn with fever, chills, vomiting, dizziness, or confusion needs a doctor. Leave cold-pressed citrus oils out of anything you put on sun-exposed skin, make a small batch, and discard it if the color, smell, or texture changes.

Sleepy-Time Pillow Spray

If you have trouble winding down, give this pillow spray a try! It combines relaxing essential oils to help create a peaceful bedtime atmosphere.

Sleepy-time Pillow Spray

Author Mama Z

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Quantity

2x4x6x

Ingredients

• 60 drops essential oils*
• 1 tablespoon + 1 teaspoon 190 proof alcohol OR the highest proof alcohol you can find
• Purified OR distilled water

Supplies

• Glass jar for mixing
• spray bottle

Instructions

 

• In a glass jar, mix the essential oils and alcohol until well combined.
• Pour into a glass spray bottle.
• Fill the bottle the rest of the way with distilled water, leaving enough room to replace the top.
• Replace the lid and gently shake to combine.
• To use, spray on linens and pillows before bed.

Notes

Some great essential oils for sleep include vetiver, clary sage, ylang-ylang, lavender, angelica, chamomile, neroli, valerian, juniper berry, and bergamot. Mix and match to create your preferred blend for sleep.

Step One: Mix Essential Oils and Alcohol

Mix the essential oils of choice and alcohol until well blended. See the above notes for relaxing EO suggestions. Add to a 2-ounce spray bottle.

Step Two: Add Water

Fill the bottle the rest of the way with distilled water. To use, spritz lightly on pillows and bedding before you go to sleep. Let the fabric dry before placing your face on it. Sweet dreams!

Do not spray directly into the face, near flame, or into an infant’s sleep space, and check that each oil suits everyone who shares the room, pets included. Make a small amount and use it up quickly.

Essential Oil Dilution FAQs

How many drops of essential oil go in a 10 ml roller bottle?

For a 2 percent adult blend, add 6 drops of essential oil to a 10 ml roller and top it with carrier oil. Use 3 drops for 1 percent, 9 drops for 3 percent, 15 drops for 5 percent, and 30 drops for 10 percent, and do not go above 25 percent in a roller.

Can I put essential oils directly on my skin?

For most uses, no: dilute first. There is a time and a place for neat application on a small spot, but everyday use belongs at the dilutions in the chart.

Can I dilute essential oils with water?

No. Essential oils and water naturally separate, and adding more water does not make a floating droplet less concentrated when it touches your skin. Dissolve the oils in high-proof alcohol, soap, a solubilizer, or a prepared base first.

Does witch hazel or vodka dilute essential oils?

Not on their own. The common witch hazel with about 14 percent alcohol is still mostly water, and ordinary vodka at 40 to 50 percent ethanol is too weak, so dissolve the oils in 95 percent ethanol first and then add the witch hazel or water.

How many drops of essential oil are in one milliliter?

Roughly 20 to 40, depending on the oil, the temperature, and the dropper insert. Use one consistent chart for home blending and weigh your oils when precision matters. (2)

Final Thoughts on Diluting Essential Oils

God created each of us to be unique, and our body-care products can reflect that. As you learn about diluting essential oils, remember to customize your recipes to fit your specific needs.

Keep everyday body care at 2 percent, go gentler for children and the face, and reach for the stronger remedy dilutions when you have a specific job to do. Use high-proof alcohol for sprays and a soap or bath base for baths.

The chemistry does not have to make natural living intimidating. It simply gives us a better way to steward the powerful plants He made. For more on caring for the body God gave you, visit us at Bible Health.

Keep reading: 12 Healing Oils of the Bible: Uses & Anointing Oil Recipe · How to Make a Bruise Roll-On With Essential Oils & Arnica · 40+ Essential Oil Diffuser Recipes for Every Season