How to Make Herb-Infused Oil: Infuse Oils with Seasonal Herbs

Make Herb-Infused Oils: Start Your Natural Skincare Ritual

Herbal-infused oils are, hands down, one of my favourite ways to slow down and connect with plants — with intention, curiosity, and yes, a little bit of science.

I still remember the first time I tried to make my own herbal oil infusion. It was mid-summer, everything smelled of sun-warmed rosemary, and honestly — I had no clue what I was doing. Spoiler: I completely forgot to dry the herbs properly, and the whole jar went funky in under a week. But even then — there was something magical about watching those herbs slowly transform, bathed in sunlight.

Back in my university days, I’d spend hours in ecology labs, pressing leaves between paper, scribbling Latin names, and learning how plants move in their own quiet rhythms. Then, it was herbs pressed into pages. Now? Herbs pressed into oils.

These days, herbal oil infusions are at the heart of my skincare rituals. They’re simple, soulful, and deeply connected to the seasons. There’s something grounding about making skincare with your own hands — feeling the texture of chamomile, pouring golden oils, waiting patiently as the plants and oils do their slow work.

Curious about alcohol-free, water-based herbal extracts? Discover everything you need to know about glycerites in natural skincare—a gentle, kid-friendly alternative to oil macerates.This extraction method is part of the Botanical Library.

This post is part story, part science. I’ll show you what an herbal oil infusion is, how my botanical background shaped how I work with plants, and how you can start your own ritual — no lab coat needed. 🌿

What Is an Herbal Oil Infusion (And Why You’ll Love Making It)

An herbal oil infusion is a gentle, effective way to extract the beneficial properties of herbs by infusing them into a nourishing carrier oil. The process sounds simple — and it is — but it also holds so much beauty. You combine herbs (either fresh herbs or dried herbs) with oils like olive oil, almond oil, or coconut oil, then let the mixture steep over time. Slowly, the herbal properties move from plant to oil, creating a rich, aromatic herb-infused oil that’s perfect for skincare and even some medicinal applications.

There are different ways to make herb-infused oils, and the method you choose shapes the final product. You can try the cold infusion method — which allows the herbs to gently infuse at room temperature over several weeks — or the warm infusion method, where the herbs and oil are heated slowly to speed up the process. Both methods create beautiful oils that nourish the skin and capture the essence of the herbs.

And that’s why I love this process so much. It connects you to the plants. To the seasons. To the quiet magic of slow skincare. 🌿

👉 You might also see herbal oil infusion described as “macerated oils” — it’s the same process, just another name. If you’d like to explore it further, here’s an excellent guide from Formula Botanica.

Which Herbs Can You Use for Oil Infusions? Fresh vs. Dried

The beauty of herbal oil infusions is that you can work with so many different herbs — flowers, leaves, roots — depending on what your skin needs, what’s in season, and, honestly, what’s calling to you at that moment.

You can make herbal oils with either fresh herbs or dried herbs, and both have their own charm.

🌿 Fresh herbs:
These bring a vibrant, living energy to the oil — they’re rich in volatile oils and aroma. But here’s the thing: fresh herbs contain moisture, and too much water in your jar can cause the oil to spoil. So, if you’re using fresh plants, it’s best to wilt them for a day or two first (lay them out in a warm, airy spot) to reduce excess moisture before starting your infusion.

Some of my favourite herbs to infuse include:

• St. John’s Wort — deeply healing, great for sun-exposed skin – If you’re curious about working with this plant, here’s my full guide on how to make St. John’s Wort oil.
• Rosemary (leaf) — stimulating, warming, helps with circulation – If you’d like to learn more about working with rosemary, here’s my full guide on how to make a rosemary oil infusion.

🌾 Dried herbs:
Using dried herbs is often more beginner-friendly. They’re shelf-stable, easy to store, and less likely to introduce water into your oil. If properly dried and vibrant (colourful, aromatic — not dusty or faded), dried herbs can produce beautifully potent infusions.

Some of my favourite herbs to infuse include:

• Chamomile — calming, soothing, gentle for all skin types
• Calendula — supports skin repair, anti-inflammatory
• Lavender — relaxing, balancing, aromatic
• Rose petals — softening, toning, pure joy for the senses
• Plantain — soothing for irritated or sensitive skin
• Urucum (Bixa orellana) — rich in carotenoids, gives skin a natural glow and warm tone – Curious about this gorgeous plant? You can read more about the skincare benefits of urucum (Bixa orellana) here.

You can also blend herbs and flowers to create a more personalised infusion — one that targets exactly what your skin craves.

What Does an Oil Infusion Extract from Herbs? Understanding Herbal Chemistry in Oils

When we make an herbal oil infusion, we’re not creating an essential oil — and we’re not pulling out everything the plant contains. Instead, oil infusions are specifically designed to extract oil-soluble plant compounds — and these are exactly the ones that make your skin love these preparations so much.

So — what does an oil infusion actually extract? Mostly:

• Oleoresins
• Resins
• Volatile oils (aromatic compounds)
• Lipids (plant fats)
• Fat-soluble vitamins
• And to a lesser extent: certain tannins, gums, and mucilage

The choice of herb, how it’s prepared, and the method of infusion will all influence which of these beautiful compounds end up in your oil. And once you understand this — you can start pairing herbs and oils with intention, depending on what your skin truly needs. 🌿

What Is the Best Oil to Use for Infusions? My Favorite Choices for Glowing Skin

Now that you know what’s actually being extracted from the plant, let’s talk about carrier oils — because choosing the right one can make all the difference in how your final infusion looks, feels, and works for your skin.

Oils aren’t just passive carriers — they have their own properties. Some are rich and protective, others light and fast-absorbing. And they also vary in stability (how fast they oxidise), which affects your infusion’s shelf life.

Here are some of my favourite oils for making herbal infusions:

🌿 Olive oil — classic and antioxidant-rich. Deeply nourishing and protective. Great for healing salves, winter oils, and mature skin blends.

🌿 Sweet almond oil — light to medium feel. Lovely for massage oils, facial blends, or body oils.

🌿 Grapeseed oil — light, quick to absorb, excellent for oily or acne-prone skin.

🌿 Sunflower oil — neutral scent, gentle on sensitive skin, beautiful for everyday use.

🌿 Coconut oil — rich and antimicrobial. Solid at room temp in cooler climates — great for body butters and balms.

🌿 Sesame oil — warming, deeply nourishing, lovely for Ayurvedic-style oils.

🌿 Rosehip seed oil — bright, vitamin-rich, wonderful for facial care and scar work — but oxidises faster, so I often blend it with more stable oils and add vitamin E.

You can explore my full Botanical Oil Guide here — if you’d like a deeper dive into the skin benefits of different carrier oils and how to choose the perfect one for your next infusion.

👉 Important note: oils, especially warm oils, will also extract pesticides or herbicides if they are present in the plant material (Cech, 2000). That’s why it’s crucial to choose organically grown or properly wildcrafted herbs — and cold-pressed, high-quality carrier oils. You don’t want to concentrate any unwanted chemicals into your beautiful infusion.

Because oils are sensitive to light, heat, and oxygen, here’s how I protect my infusions:

• Use sterilised, dark glass bottles or jars
• Store in a cool, dark place (not your steamy bathroom shelf)
• Add vitamin E oil or rosemary extract — these natural antioxidants help slow down oxidation and extend shelf life
• And what about longevity? Depending on the oil and how well you store it, your infusion can last anywhere from 6 months to 2–3 years.

As always — trust your senses. If the oil starts to smell “off” or look cloudy, it’s time to let it go. Your skin will thank you. 🌿

What Is the Best Ratio of Herbs to Oil for Infusion? Simple Tips for Potent Herbal Oils

One of the most common questions I get is: how much herb should I use for my oil infusion?
And the answer is — it depends a little on the herb, the method, and how potent you want the final oil to be. But here’s a simple guideline that works beautifully for most preparations:

🌿 If you’re using dried herbs:
→ Aim for roughly 1 part dried herb to 4–9 parts oil (by weight or volume).
A classic example: 25 g of dried calendula petals with 50–75 ml of oil.

Dried herbs are already concentrated, so you don’t need a huge amount — but you do want the oil to fully cover the plant material by at least a few centimetres.

🌿 If you’re using fresh or wilted herbs:
→ Fill your jar loosely with the plant material, then pour in enough oil to cover the herbs by at least 2–3 cm above the top of the plants.
Since fresh herbs will release some water and shrink a little during infusion, I like to “top up” the oil after the first day if needed.

Blending herbs & flowers? You can absolutely mix and match — just stick to the basic ratios, and make sure everything is fully submerged in oil to avoid oxidation or spoilage.

✨ Why does this matter?
Using the right ratio allows your oil to extract a balanced amount of the plant’s beneficial compounds — creating a potent, skin-loving infusion that can support a variety of skincare needs. Depending on the herbs you choose, your infusion can target different skin concerns — dryness, irritation, dullness, or even occasional flare-ups.

And of course — once you know the basics, you can start experimenting. Want a lighter, more delicate oil? Use more carrier oil relative to the herbs. Want a stronger, richer infusion? Go for a more concentrated blend.

At the end of the day — trust your eyes, nose, and intuition. That’s where the real magic happens. 🌿✨

Herbal Oil Infusion Methods: Cold Infusion vs Warm Infusion + Alcohol Intermediary

There are a few ways to make herbal oil infusions — and each one brings a slightly different result, depending on the plant and your own rhythm.

Here’s how I usually work:

🌿 Cold Infusion Method
This is my go-to for most herbs. I fill a clean, dry jar with the herbs (either dried or freshly wilted), pour the oil over until everything is fully submerged, and then — I leave it alone.

The jar goes onto a shelf — not in direct sunlight — somewhere I’ll see it and remember to check in. Every few days (especially if using fresh herbs), I open it, give it a sniff, a little shake, and make sure no moisture or mould is sneaking in.

Then — I close it and let it keep infusing for a few weeks (3–4 weeks for most herbs, sometimes longer).

The process is simple and gentle — and you’ll notice the oil changing colour and aroma over time.

🔥 Warm Infusion Method (Double Boiler)
If I need an infusion a little faster, or if I’m working with tougher herbs (roots, barks), I’ll use the warm method.

I place the herbs and oil in a heat-safe container, then set it over a very low heat — usually in a double boiler or bain marie — and let it warm gently for several hours. The goal is to encourage extraction, not to cook the herbs! I like to keep the oil temperature below 50–60°C (120–140°F).

🍸 Alcohol Intermediary Method
When I want an even deeper extraction, or when I’m working with herbs that are rich in active compounds that are harder to pull out with oil alone — I use the alcohol intermediary method.

It’s simple: I mist the dried herbs lightly with high-proof alcohol (like 95% ethanol), let them sit for 24 hours, and then cover with oil as usual.

The alcohol helps break open the plant cell walls and allows those desirable compounds to move into the oil more effectively — plus, it helps reduce the risk of spoilage.

This method is especially useful when you want a faster, more potent oil — or when working with certain plants where full extraction really benefits from that extra step.

How to Finish Your Infusion: Filtration, Storage and Labeling

Once your herbal oil infusion has done its slow magic, there’s one final — and very satisfying — step: finishing your oil.

Here’s how I do it:

🫙 Filtration
When the infusion time is up (whether you used the cold or warm infusion method), it’s time to strain the herbs from the oil.

I use a fine muslin cloth or an unbleached coffee filter placed over a funnel or a clean jar. Take your time here — let the oil drip through slowly, and resist the urge to squeeze the herbs too hard (you’ll extract more plant particles and moisture if you do).

This is one of my favourite parts — watching that rich, golden oil flow into the jar.

I always try to think ahead: if I harvest herbs at their peak and prepare enough infusions, there’s no reason my skin can’t benefit from those beautiful plant properties even in the depths of winter.

🧴 Storage
Once strained, pour your finished oil into sterilised, dark-coloured glass bottles or jars.

Label clearly — trust me on this one. There’s nothing worse than finding a mystery bottle in your cupboard six months later! I like to write:

• What herb(s) I used
• Which oil I infused in
• The date of infusion

Shelf life? It depends on the oil you used and how you store it:

• For stable oils (like olive or sunflower): 1–2 years
• For more delicate oils (like rosehip): 6–12 months

🌿 Tip: Adding a few drops of vitamin E oil or rosemary extract can help extend the life of your infusion and protect it from oxidation.

And finally — always trust your senses. If the oil smells sour or rancid, or looks cloudy — it’s time to let it go. Your skin deserves only the freshest, most vibrant oils.

How My Botanical Background Changed the Way I Make Herb-Infused Oils

Before I ever started making skincare, I spent years surrounded by plants — in university labs, in the field, with my nose in old botany books. And honestly? That background completely shaped the way I work with herbs today.

Ecology taught me one thing above all: observe. Plants aren’t just ingredients. They’re living beings with rhythms, cycles, and chemistry that changes with the seasons.

That’s why I don’t just toss herbs into a jar and hope for the best. I pay attention to:

• When a plant is at its peak
• How it was grown (or foraged)
• Whether the weather was dry or humid that week
• How vibrant the colour and scent are

For example — I always harvest St. John’s Wort on a bright, sunny day around midsummer, when the flowers are almost glowing. That’s when the plant’s pigments and active compounds are strongest — and when the resulting oil turns that gorgeous, deep red.

Lavender? I pick it early in the morning, just as the sun hits the petals — before the volatile oils start to fade in the heat.

Every plant has its own story, its own energy — and once you start noticing these details, your infusions become so much more than just “herb + oil.” They become a conversation with the plant.

That’s why my approach to herb-infused oils will always be rooted in respect, observation, and a deep love for nature’s rhythms.

Seasonal Herbal Oil Infusions: My Go-To Herbs for Each Season

One of the most satisfying things about making herbal oil infusions is knowing that — with a little intention — you can enjoy them all year round.

That’s why, when I’m out gathering, I’m not just thinking about today — I’m thinking about what my skin might crave a few months from now. Light, refreshing oils for spring. Soothing blends for after too much summer sun. Nourishing, protective oils for dry winter days.

By following the rhythm of the seasons — and listening to both the plants and your own skin — you can build a little collection of oils that truly support you, whatever the time of year. 🌿✨

Skincare Is Slow Science with Soul: Why I Love Herbal Oils

For me, making herb-infused oils isn’t just about skincare — it’s about connection. With the plants, with the seasons, with your own hands. It’s slow work, in the best possible way.

You start by noticing the plant — its colour, scent, texture. You take the time to prepare it, to pair it with the right oil, to wait and watch as the infusion deepens. And somewhere in that process, the ritual becomes as nourishing as the oil itself.

And here’s the beautiful part — this isn’t just folk wisdom anymore. A 2024 study published in Plants (Basel) confirmed that when organic herbs are gently macerated in oils — especially olive oil — they release a wide range of beneficial compounds with antioxidant and anti-inflammatory properties that directly support skin health (source).

So yes, this is slow skincare — but it’s also backed by science.

And how you use your infusions? That’s completely up to you. Some become massage oils for tired legs. Others find their way into nourishing facial blends, lip balms, cleansing oils, or protective salves.

With just a few simple bottles, a good label, and a little intention — your oil becomes a story. A collaboration between you and the plant. A moment of care, bottled for later. 🌿✨

FAQ

Ready to create your own herb-infused oil?

So… what will you infuse first?

Will it be lemon balm for calm evenings? St. John’s Wort for sun-kissed skin? Maybe a silky calendula and rose blend?

Whatever calls to you — I’d love to hear. Send me a message, share your photos, or tell me which herbs you’re working with. Let’s keep this beautiful herbal ritual alive, season after season.

With gratitude and green fingers,
Kristina