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You are here: Home / Crafts / How to Make a Herbal Infused Oil

How to Make a Herbal Infused Oil

October 11, 2017 by Ashley Adamant 23 Comments

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Herb-infused oils are a great way to extract the potent medicine from herbs for use in soaps, salves, lotions and massage oils.  While teas extract herbs in water for us to take internally, oils do the same work extracting medicinal compounds for use externally.  A bit of dried herb and a carrier oil such as olive oil, grape seed oil or jojoba is all you need to get started.

What to infuse depends on how you intend to use the oil. Some infused oils are perfect for direct application, and in my house we keep a bit of calendula infused jojoba oil around for chapped skin and irritation.

Fragrant herbs like lavender are great for creating bath oils and exfoliating sugar scrubs. Arnica flower infused oil makes the perfect massage oil for treating sore muscles.

Herbs for Infused Oil

How to Make Herb Infused Oils

Start with a clean, very dry jar.  Fill the jar with herbs of your choice, leaving at least 2 inches of headspace at the top of the jar.  Be sure to use dried herbs, as moisture in fresh herbs will cause the oil to go rancid.

It can help to chop the herbs, or grind them with a mortar and pestle to increase the surface area exposed to the oil.  This will allow more of the herbal constituents to infuse.

Fill the jar with oil, covering the herbs by at least 1 inch and leaving an inch of headspace.  As the herbs absorb some of the oil, you may need to add more oil later to keep the herbs covered, so this extra space is essential.

Stir the oil and herb mixture and cap the jar tightly.

How you infuse the oil depends on how long you’re willing to wait.

Traditional Method: Place the jar with your oil and herb mixture on a warm, sunny windowsill.  Allow the oil to infuse for 3 to 6 weeks.

Quicker Method: Adding a bit of heat can speed the process along, but be careful not to allow the temperature to rise too high or you’ll cook your herbs and destroy their medicinal components.  Place the jar in water in a crock pot, double boiler or yogurt maker. 

Or, do what I did and use your instant pot filled with water on the yogurt setting. Regardless of what you choose, keep the herbs at around 100 degrees for about 48 hours.

Fastest Method: When you really need to create a herbal remedy in a pinch, perhaps to treat a recent injury, sting or skin condition that’s gotten out of control, herbs can be infused in as little as 4-6 hours.  Use a slow cooker or double boiler to keep the herbs at around 120 degrees for 4-6 hours.

Regardless of your infusion method, once the infusion is complete, strain the herb mixture through cheesecloth or a fine mesh strainer.  Use your hands to squeeze out as much oil as possible. 

Tightly cap the oil as air exposure causes it to go rancid faster.  It should last at least a year tightly capped in a cool dark place.

Adding a bit of vitamin E oil helps to naturally prolong the shelf life, and will make any lotions, creams or salves you make with the oil all the more nourishing.

Herbal Infused Oils

Herbs for a cuts and scrapes infused oil. Clockwise from top left: Lemon Balm, Lavender, Calendula and Echinacea.

Choosing Herbs to Infuse in Oil

The herbs you choose will depend on how you’d like to use your oil.  The herbs in the picture above come from a recipe from the Herbal Academy Introductory Herbal Course.  It will be used in a herbal cuts and scrapes salve that I’m whipping up in my kitchen.

Their recipe has you add 2 Tablespoons of each lemon balm, lavender, calendula and echinacea to 1 1/4 cups of olive oil.  This yields about 1 cup of infused oil after the herbs have absorbed some of it.  That infused oil, once strained, will be mixed with 1 ounce of beeswax in a double boiler to make a semi-solid salve.
Herbalist Courses for all levels

Here are some herbs to try on your own:

Arnica Flowers – This makes a great massage oil and sore muscle salve.  I use an arnica infused oil in my massage practice for clients that have seriously overdone it and need some targeted muscular relief.

Calendula Flowers – Calendula is great for skin irritations.  We keep calendula infused oil in a tincture dropper bottle in our medicine cabinet for spot treatment of skin irritation.  It’s suitable for sensitive skin, and it’s even used in holistic diaper rash creams for infants.

Comfrey – Used externally to help wounds heal.  It’s so effective that herbalists warn not to use it for puncture wounds or the surface will heal too fast, not allowing the deeper puncture to heal properly.

Lavender – Cooling and calming, lavender is great for use as a bath oil.  It’s also naturally antimicrobial.  I infuse olive oil with lavender and then mix it with coarse sugar to use as an exfoliating bath scrub.

Lemon Balm – Has a cooling and calming effect on the skin.  It’s topical effects on the skin are similar to its effects taking internally as a tea for calming the whole body.

Mullein – Generally used as an oil, and a great thing to keep around in a tincture dropper bottle for ear infections.  We use mullein and garlic oil and it clears things right up.

Plantain – This herb is well known for it’s ability to work as a natural bandage for wound healing.  Adding it to salves and healing oils is a great way to make use of it’s medicine.

Rosemary – This is one of those herbs that is both tasty and medicinal.  If you infuse rosemary into olive oil it makes great rosemary roasted potatoes. 

The rosemary oil also works to treat nausea and stomach upset internally.  Topically, rosemary infused oil is great for dandruff and dry scalp.  Wonderful for use in the kitchen and in the medicine cabinet!

How to Make a Herbal Infused Oil

Herb infused oil for a cuts and scrapes salve.

Up next on my list of herbs to infuse is the mixture for this polysporin salve with comfrey, saint johns wort, plantain, calendula, yarrow and self heal.

What herbs are you excited to try?

 

How to Make a Herbal Infused Oil #herbaloil #herbinfusedoil #herbs #herbalist #herbalism #medicine #forage #foraging #wildcrafting #survival #naturalremedy #homestead

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Comments

  1. Tom

    October 14, 2017 at 3:41 pm

    Loved the article. Very easy-to-follow instructions. Would sunflower oil or coconut oil be useable as the carrier oil as well? I’ve heard coconut oil is great for external use so it could be like a double-whammy if it can act as a carrier oil for the herbal infusion. 🙂

    Reply
    • Ashley Adamant

      October 15, 2017 at 7:55 am

      Yes, both sunflower oil and coconut oil will work. For coconut oil, I’d say use the warmed infusion technique to keep the oil liquid while you’re infusing. Even the lower temp, 100 degrees or so, should be plenty to keep it liquid for infusing and for filtering out the herbs when you’re done.

      Reply
      • tea

        December 11, 2022 at 6:05 pm

        you could use fractionated coconut oil as well.

        Reply
  2. Marianne

    October 19, 2017 at 2:36 am

    Hi, i made an infusion a lil while ago and was wondering if you might help me. I have one herb that i was only able to get in powder form. Do you have any suggestions on how to strain the infusion? Cheesecloth way too pourous and coffee filters are useless as the the powder clogs it fast (oil barely goes through it in the first place). Any suggestions would be amazing! Thank you!!

    Reply
    • Ashley Adamant

      October 19, 2017 at 2:26 pm

      You’re right, coffee filters are too fine generally, and nothing really gets through. I have used old cloth napkins and cut up old t-shirts to use for straining. They’re less porous than cheesecloth, but not quite as fine as coffee filters. That might be a good middle ground. If that doesn’t work, depending on the herb, it might make sense to just leave it in. I’ve made a cayenne pepper salve for arthritis and I used ground cayenne and just left it in without any issues.

      What herb is still in the oil, and how do you plan to use the oil?

      Reply
      • Penny

        May 18, 2022 at 3:47 am

        I’m interested in the cayenne pepper salve. Please help with directions on how to make. Many thanks

        Reply
        • Administrator

          May 23, 2022 at 2:41 pm

          You can look at this post that gives instructions on how to make an herbal salve. You may want to reduce the amount of cayenne a bit since it is a very hot herb. You may want to start off with just 1/4 cup of cayenne pepper. https://practicalselfreliance.com/herbal-healing-salve/

          Reply
  3. Caitlyn Lamb

    April 4, 2018 at 3:59 am

    Could these oils be used in an oil diffuser?

    Reply
    • Ashley Adamant

      April 4, 2018 at 3:59 pm

      They’re not essential oils, so they won’t work in an electronic essential oil diffuser, which seem to be what everyone’s using these days. I have used a few drops in a tea light diffuser, but you need to first fill the top of the diffuser bowl with water, and then add the infused oils like you would add essential oils. That way, you’re making a hydrosol and slowly diffusing it. Here’s an example of a tea light diffuser: https://amzn.to/2GUst7L

      Reply
  4. Katy

    November 13, 2019 at 7:52 pm

    Hi Ashley – Thanks so much for this post! In using the instapot to infuse, did you use the trivet under the jars? Thank you, kk

    Reply
    • Ashley Adamant

      November 14, 2019 at 2:22 pm

      Yes, you need to use some kind of trivet under them, like the one that comes with the instant pot, or the several metal bands from canning jars all lined up on the bottom to suppor them away from the direct heat.

      Reply
    • Ashley Adamant

      November 14, 2019 at 2:22 pm

      Yes, you need to use some kind of trivet under them, like the one that comes with the instant pot, or the several metal bands from canning jars all lined up on the bottom to support them away from the direct heat.

      Reply
  5. victoria

    March 14, 2020 at 8:57 pm

    If making the arnica oil, how do y9u now how strong it is?

    Reply
    • Ashley Adamant

      March 17, 2020 at 8:33 pm

      As with any homemade remedy, there’s no standard concentration, so you won’t.

      Reply
  6. tiffany

    October 30, 2020 at 2:05 am

    I wouldn’t infuse it in the sun, as the uv rays will damage the oil. An herbalist I follow suggests a dark box and she wraps seed heat pads around the jars with a temp gauge to keep it around a hundred degrees.

    Reply
    • Administrator

      October 30, 2020 at 3:42 pm

      Thank you for your feedback. There are many different ways to make an herbal infused oil. It’s always great to explore new methods and then choose what works best for you. Herbalists have been using the sun for oil infusions for a very long time and it is a super simple way to still get great results.

      Reply
  7. Clayton Hunter

    February 8, 2021 at 5:11 pm

    I would like to use Caster Oil as a carrier for a salve .
    Do you know anything about the use of castor oil as a carrier?

    Reply
    • Ashley Adamant

      February 10, 2021 at 5:13 pm

      I believe that would work just fine.

      Reply
  8. Dave

    July 17, 2021 at 12:29 am

    Hi Ashley, I just thought I’d pass this on, Perhaps you’ve already tried this but just in case: I was making some Balm of Gilead cream which requires Bees wax. It melts much quicker if the wax is composed of small beads, however I only had hard blocks of it so I used my wife’s cheese grater to reduce the wax to small pieces. It worked fine but as a note, it is hard to clean off the grater even with a dishwasher which by the way may not be the best idea as it could eventually coat & clog the drain system since the wax needs really hot water to remain liquid. As soon as the water cools a bit it congeals. I suggest using a dedicated grater if you need to use one, that way you don’t necessarily have to wash it every time you’re done. A heat gun can melt the excess wax off which can be saved if there is any amount. .

    Reply
  9. Irina

    June 30, 2022 at 3:24 pm

    Hi Ashley. In your instructions for the quicker method when you said 100 degrees is it Fahrenheit or Celsius? Thank you.

    Reply
    • Administrator

      July 7, 2022 at 7:23 pm

      That would be Fahrenheit.

      Reply
      • Irina

        July 7, 2022 at 8:43 pm

        Thank you. I’ve made a yarrow salve from your recipe – what an amazing product!!! I highly recommend to have it. My mom had some itchy spot on her leg for years, she doesnt know what is that neither doctors so decided to try my salve and she said it worked miracle. Thank you so much for sharing your knowledge!

        Reply
        • Administrator

          July 12, 2022 at 9:34 pm

          That’s wonderful. Thank you so much for sharing.

          Reply

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I’m an off-grid homesteader in rural Vermont and the author of Practical Self Reliance, a blog that helps people find practical ways to become more self-reliant. Read More…

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