What it is
Limonene is a component of many fragrant natural ingredients. For instance, it is present in citrus oils (d-limonene) and plants in the mint family (l-limonene).
What it does
D-Limonene is used in fragrances because of its strong orange-lemon odour, while l-limonene for its piney-like aroma.
In addition, limonene can enhance the penetration of other ingredients into the skin
Limonene can cause irritations and allergies.
(Sources: Journal of Occupational Health, November 2006, pages 480–486 and pubmed)
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