In short: Mint essential oil is highly concentrated: always dilute it before skin use (about 1–2% for adults, i.e. 6–12 drops in 30 ml of carrier oil), patch-test first and keep it away from eyes and mucous membranes. Do not apply it to the face or near the nose of young children, and do not swallow it. Pregnant or breastfeeding women and people on medication should ask a doctor first.

Table of Contents

How much to dilute?

Use	Suggested strength	Example
Large areas, massage	About 1%	6 drops / 30 ml carrier
Small areas (temples, neck)	About 2–3%	12–18 drops / 30 ml
Room diffuser	—	3–5 drops / 100 ml water

Who should be careful?

Children under 3: do not apply to the face, chest or near the nose; menthol can cause breathing problems in young children.
Pregnant or breastfeeding women: ask a doctor first.
People with asthma, epilepsy or sensitive skin: start low and stop if any reaction occurs.
People on medication: ask a doctor or pharmacist.

What not to do

Do not apply neat oil to the skin.
Do not put it in eyes, nose or ears.
Do not swallow it unless the label states it is food grade.
Do not use it in place of medical treatment.

If something goes wrong

In the eyes: rinse with plenty of clean water; see a doctor if it still stings.
Red, burning skin: wipe with vegetable oil, then wash with soap; stop using.
A child swallows it: go to a medical facility immediately and bring the bottle.

Storage

Dark glass, tightly closed, in a cool place out of reach of children and pets.

FAQ

Can mint oil be used on cats or dogs?

No. Cats are particularly sensitive; do not apply to fur or diffuse in closed rooms with pets.

References: NCCIH – Peppermint Oil.

Further reading

Japanese mint SW88 from Phu Tho, Vietnam. We supply planting stock, mint essential oil (retail and bulk) and menthol crystals; test reports are available on request. See our products or contact us for a quotation.

Mint Essential Oil: Safety, How to Use It and Contraindications