Guide
Valerian root essential oil: topical and aromatic use
Valerian essential oil is steam-distilled from the root and used diluted on skin or in a diffuser, a different product from the tea, tincture and capsules most valerian research has tested; only one small human trial has tested inhaled valerian oil, and no trial has tested it on skin.
Valerian essential oil is steam-distilled from the dried root and sold for topical use (diluted in a carrier oil) or inhalation (a diffuser, or a few drops on cotton). It's a different product from the tea, tincture, and extract capsules used in most valerian research — and topical or inhaled use has almost no dedicated human trial data behind it.
What it is and how it's made
Valerian essential oil is produced by steam-distilling the dried root, concentrating its volatile oil — the same compounds responsible for the root's characteristic sweaty, musty smell, including isovaleric acid (PMID 10411208). Like other essential oils, it's a concentrated product and isn't the same thing as the dried root, tincture, or standardized extract used in the sleep and anxiety trials covered in valerian root benefits: what the research does and doesn't show — those trials dosed valerian orally, not on the skin or by inhalation.
How people use it
Valerian oil is typically diluted in a carrier oil before skin contact — undiluted essential oils are more likely to irritate skin, a standard aromatherapy safety practice rather than something specific to valerian. It's also used in a diffuser, added as a few drops on a cotton ball or pillow, or blended into commercial creams and roll-ons. None of those specific product formats — cream, roll-on, or diffuser blend — have their own dedicated human research; the closest available human data is on inhalation, covered below.
What the research tested
One identified trial tested inhaled valerian oil in people. A 2025 three-blind randomized controlled trial gave 90 adults with coronary artery disease, admitted for a nitroglycerin infusion that commonly causes headache, either inhaled lavender oil, inhaled valerian oil (3 drops on cotton, inhaled for 30 minutes), or no scent at all, split into three groups of 30. Headache severity dropped significantly more in both essential-oil groups than in the no-intervention group, with no significant difference between lavender and valerian. Because the comparison group received no intervention rather than a blinded placebo scent, the trial can't rule out that simply receiving attention, or any scent at all, explains part of the difference — and it measured headache from a medication side effect in a hospitalized population, not sleep, anxiety, or any outcome specific to a healthy person using the oil at home (PMID 41311605). No trial has tested valerian oil applied to skin in people, at any dose.
Safety for pets
No dedicated safety research on valerian essential oil in cats, dogs, or other pets was found for this page. Essential oils in general carry known risks for some animals — cats in particular process certain plant compounds differently than people do. Ask a veterinarian before diffusing, applying, or otherwise using any essential oil, valerian included, around or on a pet.
Questions people ask
How do you use valerian root essential oil?
Most commonly diluted in a carrier oil for skin contact, or added to a diffuser or a few drops on cotton for inhalation. There's no established dose for either use — the one human trial identified used 3 drops inhaled for 30 minutes, in a hospital setting, not a general wellness context.
Is valerian root essential oil safe for dogs?
No dedicated research on that question was found for this page. Ask a veterinarian before using any essential oil, valerian included, around a dog.
What does valerian root oil smell like?
The same sweaty, musty, cheese-like smell as the dried root and tea, caused by isovaleric acid and related compounds (PMID 10411208) — concentrated further in the distilled oil.
Can you combine valerian root oil with CBD oil?
No trial tests that combination. This page doesn't have a research basis to say whether combining the two changes either product's effect.
Related reading: what is valerian root? a plain guide, valerian root benefits: what the research does and doesn't show, and valerian root side effects.
Sources
- The scientific basis for the reputed activity of Valerian A pharmacology review describes laboratory evidence that valerenic acid, one of valerian's compounds, slows the breakdown of GABA, a proposed mechanism for its traditional sedative reputation — laboratory-level evidence, not proof of effect in people.
- Compare the Effect of Aromatherapy with Lavender and Valerian Essential Oil on Headache Caused by Nitroglycerin Infusion, Vital Signs, and Narcotic Use in Patients with Coronary Artery Disease: A Three-Blind, Randomized Controlled Trial A 2025 trial in 90 coronary-care patients found inhaled valerian and lavender essential oils were both linked to a bigger drop in medication-related headache than no intervention, with no difference between the two oils, but the control group received no scent at all rather than a blinded placebo, so the oils' own contribution beyond attention or expectation is uncertain.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.