Ingredient Encyclopedia

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Discover what’s inside your skincare — from retinol to aloe vera — with clear guides on benefits, uses, and safety.

Ingredient Encyclopedia

Peppermint Oil – Benefits, Side Effects & Uses

by ThankMeNow Editors on Sep 10, 2025
Peppermint Oil (Mentha Piperita Oil) is an oil-soluble, extremely potent essential oil characterized by its high concentration of Menthol, Menthone, and volatile Monoterpenes, giving it a powerful cooling sensation and strong antimicrobial properties. Unlike gentler derivatives, its high potency results in a moderate to high irritation risk, necessitating use in very low concentrations (0.1−0.5% in leave-on) and always fully diluted. It is best used for its sensory benefits, providing intense cooling (up to 92% reported) and invigorating aromatherapy in rinse-off formulas, scalp care, or foot products, but is not suitable for sensitive, barrier-damaged, or reactive skin.