There’s a 42 % chance that your peppermint toothpaste or gum contains adulterated or synthetic peppermint oil. Research found 21 out of 50 commercial samples were fraudulent, often containing cheaper oils or synthetic compounds—highlighting the need for strict quality control. ScienceDirect Research.
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PubMed research highlights widespread adulteration in essential oils. For example, many products labeled as birch oil were actually wintergreen or even synthetic, made from expired aspirin! The common thread? Methyl salicylate—it smells like birch but has no real connection to the plant.
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The benefits of lavender oil depend on its precise chemical composition. ISO 3515:2002 allows wide ranges for key compounds (linalool 20–43 %, linalyl acetate 25–47 %), meaning one bottle may contain only half as much of a key compound as another.
| Read ISO 3515:2002!