Limonene is a citrus-scented fragrance molecule naturally present in many essential oils.
It does not provide a direct skincare benefit. Fresh limonene is relatively low-sensitizing, but its oxidation products can become much more allergenic after air exposure, which is why antioxidant protection and proper formula storage matter.
Usage & cautions
Fragrance-allergic users may react especially to oxidized limonene.
Information approach
Consumer-friendly summaries are informed by established cosmetic ingredient references such as INCIDecoder and Paula’s Choice Ingredient Dictionary, while avoiding turning ingredient-level evidence into medical claims about the finished product.
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