ModerateControlled human trialsRepeated studies in people.

EarlySmall / lab / animalPromising, not yet proven in people.

TraditionalLong-usedClinical evidence still anecdotal.

NoneNo trials foundWe looked and found none.

What the studies say

Moderate

A systematic review and a controlled trial give moderate evidence that menthol can ease tension headache.

Early

In a mouse study, 3% peppermint oil grew hair more effectively than minoxidil — striking, but animal-only.

Early

Lab studies show peppermint and menthol have antifungal activity.

Early

A controlled trial suggests peppermint aroma may ease physiological stress.

Early

A controlled study found peppermint leaf extract improved dermal thickness.

Early

An animal study with peppermint + rosemary reduced osteoarthritis pain.

Study counts reflect our internal research database. Figures are honest tallies, not marketing claims; every linked study opens on PubMed.

Peppermint Essential Oil