Peppermint is a naturally occurring hybrid of watermint (Mentha aquatica) and spearmint (Mentha spicata), and one of the most widely cultivated herbs on the planet. The essential oil is steam-distilled from the flowering herb and is defined by its high menthol content (35-50%), alongside menthone (15-30%), 1,8-cineole, menthyl acetate, and isomenthone.
Menthol is the molecule responsible for that unmistakable cooling sensation. It works by activating TRPM8, the same cold-sensitive receptor in your skin and nerves that responds to a drop in temperature — so menthol tricks those receptors into signalling "cool" without any actual change in temperature. That is why a diluted peppermint blend feels refreshing on skin.
The high menthol content is also why peppermint is more potent than many oils and why careful dilution matters. The same compound that feels pleasantly cool at low dilution can sting or irritate at high concentration or near sensitive tissue — which is the reason for the eye, mucous-membrane, and young-children cautions in the Safety section.
Peppermint is a top note: light, fast-evaporating molecules that make a bright first impression and then fade. In blends it lifts and sharpens, so it is usually used sparingly and paired with longer-lasting middle and base notes.
One ingredient — pure steam-distilled peppermint herb oil. Its character comes from the natural constituent profile below.
Menthol (35-50%)
The dominant constituent and the source of peppermint's cooling sensation via the TRPM8 cold receptor.
Menthone (15-30%)
A ketone that contributes to the sharp, fresh, slightly green minty character.
1,8-Cineole & Others
1,8-cineole (3-7%), menthyl acetate, and isomenthone round out the bright, clean, fresh-feeling aroma.
What to Expect
First impression: Sharp, bright, intensely minty — more intense than spearmint, with a pronounced cool note on the inhale. As a top note it makes an immediate impression and then fades.
On skin (diluted): A distinct cooling, tingling sensation from the menthol. Start low — the cooling can feel intense, especially for first-time users and on sensitive areas.
In blends: Powerful and easy to overdo. Use sparingly — often a single drop — and pair with middle/base notes for balance and staying power.