A Lio core is a hand-pressed plant fibre infused with food-grade essential oils. Nothing combusts. Nothing heats. Nothing vaporizes. You're inhaling cool air carrying scent molecules — the same physical mechanism as smelling fresh herbs.
The active aromatic compounds in our cores come from three plant families. Each was chosen because they appear in the peer-reviewed literature on olfactory and respiratory-tract craving research.
From Mentha piperita essential oil. These compounds are responsible for the cool airway sensation that most closely mimics the throat-hit dimension identified by Rose & Behm.
From Cinnamomum essential oil. Warm aromatic profile that targets the olfactory-craving pathway documented by Sayette & Parrott.
From cold-pressed citrus and natural fruit aromatics. Mango Passion and Razzy Berry contain a small amount of a food-and-cosmetic-grade carrier (the same class of carrier used in flavor extracts, approved for oral and skin contact) to keep the fruit aroma vivid. Our mint and spice cores contain no carrier at all.
If a category of nicotine product would normally include this, we want it on record that we don't.
Full per-flavor ingredient lists are available on every product page. If you have a specific allergy — citrus, mint, tree nuts, anything — check the label before ordering, or email us and we'll walk you through every compound by name.
Lio is a wellness and aromatherapy device. Statements on this page have not been evaluated by any medical regulatory authority. Lio is not intended to diagnose, treat, cure, or prevent any disease, and is not a medical or smoking cessation device. The studies referenced on these pages describe the broader body of research on sensorimotor and olfactory craving science, and do not constitute clinical evidence regarding Lio specifically. Independent laboratory analysis referenced on these pages measured chemical composition against published European exposure thresholds and does not constitute a clinical safety determination. If you have or suspect you have a medical condition, consult a healthcare professional.
© Copyright 2026, Lio · Breathelio B.V. · Amsterdam, NL