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What's inside

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Light 37% Doesn't Work 32% Irritating 32%
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Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Masking, Perfuming, Refreshing

This essential oil is steam-distilled from peppermint leaves, also known as peppermint oil. It's mainly used for scent in skincare but also provides that signature "cooling" sensation.

Peppermint oil is a "feels amazing" ingredient until it doesn't.

At higher doses or for those with sensitive skin, methol-type cooling can quickly turn into burning/irritation. It can also trigger irritant dermatitis or even allergic contact dermatitis. In a large patch-test dataset, peppermint oil had a low but positive rate for this.

In cosmetics, Cosmetic Safety Reviews (CIR) concludes that peppermint oil is safe to use when formulated to be non-sensitizing with some restrictions; for instance, pulegone, a naturally occurring component of peppermint oil, should not exceed 1%.

Since peppermint oil contains fragrance allergens such as limonene, linalool, and menthol, it can be sensitizing for those with rosacea, eczema, a broken skin barrier, or just sensitive skin in general.

In Japan, this ingredient is known as Hakka Yu.

Learn more about Mentha Piperita Oil

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