Carrier oils

What to dilute essential oils into — and which to pick.

What is a carrier oil?

A carrier oil is a neutral plant oil that “carries” an essential oil onto your skin. Essential oils are concentrated and can irritate or burn skin if applied directly. Diluting them in a carrier oil reduces concentration to safe levels while allowing the oil’s benefits to absorb properly.

Most carrier oils have their own mild benefits (moisturizing, nourishing, soothing) but they’re primarily delivery vehicles. Unlike essential oils, you don’t need a Supplement Facts panel for topical use — food-grade or cosmetic-grade carriers from a reputable source work fine for skin.

Common carrier oils

Fractionated Coconut Oil(Cocos nucifera (MCT))

The most popular carrier oil for essential oils. Liquid at room temperature (unlike whole coconut oil), absorbs cleanly, leaves no greasy residue, and has a long shelf life. Nearly odorless. The default choice for most diluted topical applications.

Most popularLong shelf lifeLight texture

Jojoba Oil(Simmondsia chinensis)

Technically a liquid wax, not an oil. Closest match to the skin’s own natural oil (sebum), so it absorbs deeply and is well-tolerated by sensitive skin and acne-prone skin. Excellent shelf life (does not oxidize easily). More expensive than coconut.

Best for sensitive skinAcne-friendlyLong shelf life

Sweet Almond Oil(Prunus dulcis)

Mild, slightly sweet scent. Light to medium texture. Rich in vitamin E. Good general-purpose carrier for body massage and facial applications. Spreads easily, absorbs moderately fast.

General purposeVitamin ELight scent

⚠️ Avoid if you have a tree nut allergy.

Olive Oil(Olea europaea)

Common kitchen oil that doubles as a carrier. Heavier texture and stronger scent than coconut or jojoba, which can compete with delicate essential oil aromas. Use extra-virgin for best skin benefits. Works in a pinch when nothing else is available.

Easily availableHeavier textureStrong scent

⚠️ Strong scent can overpower lighter essential oils. Better for stronger oils like rosemary or oregano.

Grapeseed Oil(Vitis vinifera)

Light, almost odorless, and inexpensive. Absorbs quickly without leaving residue. Higher in linoleic acid, which is good for acne-prone or oily skin. Shorter shelf life than jojoba or fractionated coconut — refrigerate after opening.

Light textureInexpensiveAcne-friendly

⚠️ Shorter shelf life. Refrigerate after opening to extend.

Castor Oil(Ricinus communis)

Very thick, viscous oil with a long traditional history of topical use for joint pain, scalp/hair care, and skin healing. Best used in small amounts mixed with a lighter carrier (e.g., 25% castor + 75% jojoba) rather than alone, since it’s sticky and slow to absorb.

Thick textureTraditional useBest blended

⚠️ Sticky and slow to absorb alone. Best mixed with a lighter carrier oil.

Argan Oil(Argania spinosa)

Premium carrier known as “liquid gold.” Rich in vitamin E and fatty acids. Excellent for facial skincare, hair care, and dry skin. Expensive. Often diluted with cheaper carriers when used for body applications.

PremiumFace & hairExpensive

Coconut Oil (whole, virgin)(Cocos nucifera)

Solid at room temperature (melts on skin contact). Has a distinct coconut scent and heavier feel than fractionated coconut. Antimicrobial properties from lauric acid. Good for body applications but can clog pores on facial skin (comedogenic).

Solid at room tempAntimicrobialBody use

⚠️ Can clog pores on facial skin. Use fractionated coconut for face.

How to dilute

A general rule of thumb is 1 drop of essential oil per teaspoon (5 ml) of carrier oil — that’s roughly a 1% dilution, safe for most adults and kids 6+ for most oils. Stronger or more sensitizing oils (oregano, clove, cinnamon) need heavier dilution; gentler oils (lavender, sweet orange) tolerate slightly higher concentrations.

Each oil’s detail page lists the specific dilution for its safety profile and age range. When in doubt, dilute more, not less.

SourcesWorwood VA: Complete Book of Essential Oils and Aromatherapy 2nd ed. 2016 · Tisserand R, Young R: Essential Oil Safety 2nd ed. 2014 · American Academy of Dermatology — Skin care basics.