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You bought a few bottles of essential oils, and now you’re staring at them wondering what to do next. Can you combine them? Do you need a carrier oil? How many drops is too many?
The good news: learning how to mix essential oils is easy once you know two simple rules. In this guide, we’ll walk you through both, with exact drop counts, a dilution chart you can save, and beginner-friendly recipes for your diffuser, your skin and your hair.
Quick answer: how to mix essential oils To mix essential oils for your skin or hair, add them to a carrier oil such as jojoba, sweet almond or fractionated coconut oil. For most adults, use a 2% dilution: about 12 drops of essential oil per 1 fl oz (30 ml) of carrier oil. To mix essential oils together for a scent blend, start with 10 drops total, using roughly 3 drops of a top note, 5 drops of a middle note and 2 drops of a base note. Let the blend rest for 24 hours, then smell and adjust.
When people search for how to mix essential oils, they usually mean one of two things:
Many recipes use both. For example, a hair oil starts with a blend of rosemary and peppermint, and then that blend is mixed into a carrier oil. Below, we cover each method step by step.
You don’t need a lab. Here’s a simple starter kit:
Tip: Avoid plastic for storing blends. Some essential oils can break down plastic over time, and dark amber glass protects your oils from light.
If you plan to put an essential oil on your skin, scalp or hair, mixing it with a carrier oil is the most important step. A carrier oil is a plant-based oil, usually pressed from seeds or nuts, that “carries” the essential oil onto your skin. It spreads the oil over a larger area and lowers its concentration, which helps reduce the chance of irritation.
How to mix carrier and essential oils comes down to one ratio. Use this chart:
| Dilution | Best for | Per 10 ml (roller) | Per 1 fl oz (30 ml) |
|---|---|---|---|
| 0.5–1% | Face, sensitive skin, older adults | 1–2 drops | 3–6 drops |
| 2% | Everyday body oil, scalp and hair oil | 4 drops | 12 drops |
| 3% | Massage oil for small areas, short-term use | 6 drops | 18 drops |
| 5% | Spot use for a short time only | 10 drops | 30 drops |
These counts assume about 20 drops per ml, a common estimate. Droppers vary, so measuring by weight is more precise if you make large batches.
| Carrier oil | Feel | Best for |
|---|---|---|
| Jojoba | Light, close to skin’s natural oils | Face, scalp, all skin types |
| Fractionated coconut | Very light, stays liquid, nearly odorless | Roller bottles, body oils |
| Sweet almond | Smooth, slightly rich | Massage, dry skin |
| Argan | Light, silky | Hair ends, frizz, face |
| Grapeseed | Very light, absorbs fast | Oily skin, massage |
| Castor | Thick and sticky | Scalp and lash blends (mix with a lighter oil) |
If you have a nut allergy, skip sweet almond and choose jojoba or grapeseed instead.
Diffuser note: You don’t need a carrier oil in a water-based diffuser. Add 3–5 drops of pure essential oil to the water. Carrier oils can clog the diffuser.
Blending is where essential oils get fun. Two or three oils can create a scent that’s more balanced and interesting than any single oil on its own.
Every essential oil evaporates at its own speed. Perfumers group them into three “notes”:
| Note | What it does | Examples |
|---|---|---|
| Top notes | Light and bright, the first thing you smell, fade fastest | Peppermint, Lemongrass, Eucalyptus, Citronella, Bergamot, Lemon |
| Middle notes | The heart of the blend, balanced and rounded | Lavender, Rosemary, Tea Tree, Geranium, Chamomile |
| Base notes | Deep and rich, slow to fade, anchor the blend | Cedarwood, Vetiver, Sandalwood, Patchouli, Frankincense |
Some oils sit between two notes. Lavender, for example, is often called a top-to-middle note. Don’t worry about perfect labels; let your nose guide you.
Start with a 10-drop test blend. It makes the math easy: each drop equals 10% of the blend.
You don’t need all three notes. Many great blends use just two oils, such as 4 drops of Lavender and 1 drop of Lemongrass.
Not sure where to start? These pairings work for almost everyone:
A simple tip: oils from the same scent family usually blend easily. Florals blend with florals, herbs with herbs, and citrus pairs well with almost everything.
Hair oils are one of the most popular reasons people learn how to mix essential oils, and rosemary leads the trend. In a 2015 randomized trial of 100 adults with pattern hair loss, people who applied rosemary oil for six months saw a similar increase in hair count to those who used 2% minoxidil, with less scalp itching. It was a small study, and more research is needed, but it explains why rosemary has become a favorite in hair care routines.
Jojoba is a great all-around choice because it’s light and close to your scalp’s natural oils. Argan works well for dry ends and frizz. Castor oil is popular for thickness, but it’s very thick, so mix it 1:1 with a lighter oil like jojoba.
You’ll need:
How to make and use it:
Shampoo shortcut: Add 2–3 drops of rosemary to a single palmful of unscented shampoo right before you wash. Mix it fresh each time rather than adding oil to the whole bottle.
Important: Essential oils are not a medical treatment for hair loss. If you notice sudden shedding, bald patches or scalp pain, see a dermatologist.
1. Calming Roller Blend (2%, 10 ml roller): 3 drops Lavender + 1 drop Lemongrass, topped with fractionated coconut oil. Roll onto wrists and neck in the evening. Want more ideas? See our guide to essential oils for stress.
2. Bedtime Diffuser Blend: 4 drops Lavender + 1 drop Lemongrass in 100–200 ml of water. Run for 30–60 minutes before bed. More bedtime blends are on our essential oils for sleep page.
3. Cooling Massage Oil (2%, 1 fl oz): 6 drops Peppermint + 4 drops Eucalyptus + 2 drops Lavender in sweet almond oil. Massage into shoulders or calves after a long day.
4. Fresh Home Diffuser Blend: 2 drops Eucalyptus + 2 drops Lemongrass + 1 drop Tea Tree. A clean, spa-like scent for kitchens and entryways.
A blend of pure essential oils keeps roughly as long as its shortest-lasting oil, usually one to three years when sealed and stored in a cool, dark place. Once mixed with a carrier oil, use it within about 6–12 months, depending on the carrier. If it smells sharp, sour or “off,” throw it out.
How many drops of essential oil should I mix with carrier oil?
For most adults, use 12 drops of essential oil per 1 fl oz (30 ml) of carrier oil, which is a 2% dilution. In a 10 ml roller bottle, that’s 4 drops. Use half that amount for your face or sensitive skin.
Can I mix any essential oils together?
Most essential oils can be blended safely for aroma. The bigger question is how they smell together and how strong they are. Start with a small 10-drop test blend, and follow dilution and safety guidelines for each oil before using a blend on skin.
Can I mix essential oils with water?
Not for skin. Oil and water separate, so the essential oil stays concentrated. Water is fine in an ultrasonic diffuser, and for room or pillow sprays you can add a splash of witch hazel or a dispersant and shake before each use.
What is the best carrier oil to mix with essential oils?
Jojoba is the best all-rounder because it suits most skin types and works on the scalp. Fractionated coconut oil is ideal for roller bottles, and sweet almond oil is great for massage.
How do I mix essential oils for hair growth?
Mix 7 drops of rosemary, 3 drops of peppermint and 2 drops of lavender into 1 fl oz of jojoba oil. Massage a few drops into your scalp 2–3 times a week, leave it on for at least 30 minutes, then shampoo.
Do I need a carrier oil for a diffuser?
No. Add 3–5 drops of pure essential oil to the water in your diffuser. Carrier oils are only needed for skin, scalp and hair.
Now you know how to mix essential oils both ways: with a carrier oil for skin and hair, and with each other for beautiful scent blends. Start small, count every drop, write down what you love, and always patch test.
The quality of your blend depends on the quality of your oils. At HerboEarth, every essential oil is 100% pure, with no fillers or synthetic fragrance, and comes in a 15 ml amber glass bottle. Our oils are inspired by the Himalayas of Nepal and ship from Wyoming to all 50 states.
Ready to make your first blend? Shop HerboEarth essential oils and start with Lavender, Rosemary and Peppermint, the three oils used most in this guide.
For more help, visit our Essential Oil Guide, including our dilution guide and blending guide.
Disclaimer: This article is for educational purposes only and is not medical advice. These statements have not been evaluated by the Food and Drug Administration. HerboEarth products are not intended to diagnose, treat, cure, or prevent any disease.
Quick Answer: What Is the Best Essential Oil? There is no single “best” essential oil — the right one depends on what you’re using it for. Lavender is the most
Maybe a friend gave you a bottle of lavender. Maybe you picked up a diffuser on sale and now it’s sitting on your counter. Either way, you’ve got essential oils
You bought a few bottles of essential oils, and now you’re staring at them wondering what to do next. Can you combine them? Do you need a carrier oil? How
