LIMONENE
Commonly Found In
Overview
Limonene is a naturally occurring monoterpene found abundantly in citrus peel oils, used in cosmetics as a fragrance component providing characteristic fresh citrus scent. It is a mandatory EU labeling allergen in cosmetics above 0.001% in leave-on products (Annex III/88). Studies suggest limonene oxidizes in air to form allergenic oxidation products (limonene-1,2-oxide, carvone) that may help explain observed contact allergy rates; fresh limonene is substantially less sensitizing than oxidized material. It is one of the most abundant terpenes in nature and widely used across fragrance, food, and industrial applications.
Also known as: Limonene, d-Limonene, Dipentene (racemic), 4-Isopropenyl-1-methylcyclohexene
Key Benefits
Studies suggest limonene may contribute mild antimicrobial and anti-inflammatory properties; its cosmetic value is primarily as a fragrance agent providing citrus character rather than direct skin therapeutic benefit.
Skin Compatibility Ratings
Comedogenic Rating
Non-comedogenic; volatile monoterpene that largely evaporates before significant skin absorption.
Source: SCCS/1502/12
Irritancy Rating
Sensitization potential primarily from oxidized forms; fresh limonene is less sensitizing; contact allergy frequency approximately 1β3% in patch-tested dermatitis patients; EU labeling required above threshold
Source: EU SCCS/1608/19; CIR Expert Panel
Typical Use Concentration
Range
0.001β5%
Optimal
0.01β1% in fragrance blends
EU mandatory labeling above 0.001% (leave-on) / 0.01% (rinse-off). IFRA limits vary by product category. One of the highest-volume fragrance ingredients used globally.
Works Well With / Avoid
Works Well With
Use With Caution
EU requires mandatory label disclosure (Annex III/88) above 0.001% in leave-on products. Oxidation is the main sensitization concern; antioxidants and airtight packaging recommended. IFRA provides concentration limits by product type.
Commonly Found In
Global Regulation Summary
Overview of current status across major international markets.
Detailed Regional Status
| Region | Status | Max Conc. | Conditions | Source |
|---|---|---|---|---|
| πͺπΊ EU | Banned | - | - | Official β |
| πΊπΈ USA | Allowed | - | - | Official β |
| π―π΅ Japan | Allowed | - | - | Official β |
| π°π· Korea | Unknown | - | - | Official β |
| π¬π§ UK | Restricted | - | Follows EU regulations (III/88 III/167 III/168) | Official β |
π Why Regulations Differ
The EU requires mandatory label disclosure of limonene (Annex III/88, III/167, III/168) above threshold concentrations as an allergen information measure; it is not prohibited. The 'banned' database status reflects Annex III restricted classification. The US and Japan do not require specific limonene labeling in cosmetics. IFRA provides voluntary concentration guidance.
Recent Regulatory Changes
- β’ EU proposed expansion of fragrance allergen labeling list to include oxidized limonene specifically
Regulation Analysis
Regional Agreement
Banned in EU but allowed in USA, Japan.
Category Comparison
There are 37 ingredients in the DEODORANT category. 100% are banned in at least one major market.
Strictness Ranking
πΏ Natural Sources
D-limonene is the major component of citrus peel oils: orange peel (90-96%), lemon peel (60-70%), lime (50-60%), and grapefruit (85-95%). Also found in caraway (50-60%), dill (30-40%), bergamot (30-45%), and numerous other citrus and mint essential oils.
π How It's Made
Primarily extracted from citrus peel waste by steam distillation or cold-pressing, making it a by-product of the juice industry. Can be synthetically produced via acid-catalyzed isomerization of alpha-pinene from pine trees. Most commercial limonene is naturally derived from orange processing.
π Uses in Cosmetics
Used as fragrance component in perfumes, citrus-scented products, and as a solvent at 0.01-5% concentration. Provides fresh, sweet citrus aroma. Must be labeled on EU products when exceeding 0.001% (leave-on) or 0.01% (rinse-off) per Regulation (EC) No 1223/2009 Annex III. Listed in three EU annexes (III/88, III/167, III/168) with specific restrictions.
π¬ Other Applications
Approved food flavoring (FDA-approved, EU food additive). Industrial solvent for cleaning products, degreasers, and paint strippers. Used in 3D printing resins. Investigated as renewable biofuel and green chemistry solvent. Has pharmaceutical applications as penetration enhancer and in cancer research.
π‘ Fun Facts
- β’ One of the most abundant naturally occurring terpenes on Earth, with annual production exceeding 70,000 tons from citrus processing alone.
- β’ Like linalool, limonene oxidizes in air to form allergenic compounds (limonene oxide, carvone), making fresh material less sensitizing than aged products.
- β’ The distinctive 'fresh citrus' smell makes it one of the most recognizable fragrance ingredients worldwide.
Related Skin Concerns
Data Sources
- β’ EU CosIng database (Annex III/88, III/167, III/168)
- β’ SCCS/1608/19 β Opinion on limonene in cosmetics
- β’ CIR Expert Panel β limonene safety assessment
- β’ IFRA Standards β limonene concentration limits
Last data verification: 2026-04-16
Related Ingredients
BENZYL ALCOHOL
DIBUTYL PHTHALATE
DICHLOROMETHANE
DIETHYLENE GLYCOL
DIETHYLHEXYL PHTHALATE
FARNESOL
Learn More
Frequently Asked Questions
Why is LIMONENE banned in the EU but allowed in the US?
The EU follows a precautionary principle, banning LIMONENE under III/88 III/167 III/168 due to potential safety concerns. The US FDA has not found sufficient evidence to prohibit its use, allowing it under different safety assessment standards. This reflects differing regulatory philosophies between the two regions.
Why is LIMONENE banned in the EU but allowed in Japan?
The EU prohibits LIMONENE (III/88 III/167 III/168) based on their strict safety criteria. Japan's Ministry of Health, Labour and Welfare (MHLW) has evaluated the ingredient and permits its use, potentially with different safety data or usage conditions.
What is LIMONENE used for in cosmetics?
LIMONENE is primarily used for deodorant in cosmetic products. It also serves as perfuming, solvent. The ingredient is commonly found in various cosmetic and personal care products.
Which countries regulate LIMONENE?
LIMONENE is banned in EU. It has concentration limits or usage restrictions in UK. The ingredient is freely allowed in JP, US.
Are there alternatives to LIMONENE?
Due to regulatory restrictions on LIMONENE, cosmetic manufacturers often use alternative ingredients with similar functions. For deodorant, alternatives may include other approved ingredients in the same category. Consult product labels for specific formulations, and look for products compliant with your region's regulations.
Disclaimer
The information on this website is for educational and informational purposes only and is not intended as medical advice. While we strive for accuracy based on official government databases, cosmetic regulations change frequently. Always consult with a qualified professional or refer to the latest official regulatory documents for compliance. We are not responsible for any actions taken based on the information provided here.