Limonene
(R)-1-methyl-4-(prop-1-en-2-yl)cyclohex-1-ene; d-limonene
Extremely common in citrus fragrances; EU Annex III allergen; oxidized limonene (limonene hydroperoxides) is the primary sensitizer - stability and antioxidant use are key; the d-isomer is listed; dual use as fragrance and solvent
Function & Common Use
Fragrance / Perfuming / Aroma Chemical / Solvent
Fragrance Materials
Perfumes, citrus-scented body care, shampoos, cleaning products, air fresheners, candles
Natural/Synthetic
Concentration Limits
Declaration required above 0.001% leave-on / 0.01% rinse-off
Declaration threshold: 0.001% leave-on / 0.01% rinse-off (EU Reg 2023/1545)
None (FEMA GRAS); IFRA-guided
None
Format restriction: EU mandatory declaration when above threshold; IFRA 49th Amendment specification standard (oxidation control) rather than concentration limit
Baby restriction: No
Pregnancy: No
IFRA: Yes - IFRA 49th Amendment; specification standard requiring peroxide value control (oxidized limonene is the primary sensitizer); no absolute concentration limit but hydroperoxide level must be controlled
Frequently Asked Questions
Is Limonene safe to use in skincare?
Limonene has a Low concern rating from The Clean Sheet. Extremely common in citrus fragrances; EU Annex III allergen; oxidized limonene (limonene hydroperoxides) is the primary sensitizer - stability and antioxidant use are key; the d-isomer is listed; dual use as fragrance and solvent
Is Limonene allowed in India?
Limonene is currently classified as "Permitted" under Indian cosmetics regulations. The maximum permitted concentration is Declaration required above 0.001% leave-on / 0.01% rinse-off.
What is Limonene used for in cosmetics?
Limonene functions as: Fragrance / Perfuming / Aroma Chemical / Solvent. It is commonly found in: Perfumes, citrus-scented body care, shampoos, cleaning products, air fresheners, candles.
Can Limonene cause an allergic reaction?
Yes. Limonene has an allergen flag (Yes - EU Annex III fragrance allergen). If you have sensitive skin or known fragrance/contact allergies, patch-test products containing this ingredient before full use.
Is Limonene safe for babies?
Limonene has baby/child restrictions: No. Avoid using products containing this ingredient on infants unless specifically formulated and labelled for baby use.
Regulatory Status
EU Annex: Annex III (fragrance allergen - declaration required)
Identifiers
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