What it is
Mentha arvensis leaf oil is a volatile essential oil rich in menthol and related terpenes obtained from the cornmint plant. In sunscreens and skincare it contributes a cool, minty scent and a momentary fresh sensation on application. It is used at low levels as a fragrance and sensory ingredient rather than as a functional active.
Safety & warnings
As a menthol-rich mint essential oil, it can cause a cooling or tingling sensation and may irritate or sensitize sensitive or compromised skin at higher concentrations. It contains naturally occurring fragrance constituents, including limonene and linalool, that are recognized potential allergens and must be declared in some markets. Patch testing is reasonable for fragrance-sensitive users, and products with mint oils are often avoided near the eyes.
Origin & sourcing
Natural. The oil is obtained by steam distillation of the leaves and aerial parts of Mentha arvensis (cornmint), a mint species widely cultivated for its high menthol content.
Questions everyone asks
What does cornmint leaf oil do in a sunscreen?
It mainly provides a fresh, minty fragrance and a light cooling sensation on application. It is a sensory and scent ingredient, not a UV filter or active treatment.
Is it the same as peppermint oil?
No. Cornmint oil comes from Mentha arvensis, while peppermint oil comes from Mentha piperita. Both are menthol-rich mint oils but are distinct ingredients with different compositions.