Moderate Cosmetic Ingredient Sensitization Data Dermal Penetration

Citrol

INCI: CITRAL

Citrol (CAS Citrol is a trade name; typically refers to Citral (CAS 5392-40-5, mixture of geranial + neral)) is a cosmetic cosmetic ingredient functioning as Fragrance ingredient. EU Regulation 1223/2009 status: restricted. Industrial safety data is also available in the chemical safety database.

View industrial chemical safety profile for CAS Citrol is a trade name; typically refers to Citral (CAS 5392-40-5, mixture of geranial + neral) →

Auto-generated CPSR Part A draft with source citations
CAS Number
Citrol is a trade name; typically refers to Citral (CAS 5392-40-5, mixture of geranial + neral)
View industrial chemical safety profile →
Function
Fragrance ingredient
Safety Rating
MODERATE

Regulatory Status

EU EU Status restricted
US US Status permitted
US Notes CIR reviewed; GRAS as flavor; permitted in cosmetics with allergen awareness

For full compliance data across multiple jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety, dermal absorption, and sensitization profile summaries for Citrol.

Calculate MoS for your specific formulation with the MoS Calculator.

Sensitization Profile

Contact sensitization data for Citrol based on clinical patch test studies and IFRA standards.

Sensitization Rate
moderate
Allergen Class
fragrance
EU Allergen Listed
yes
Patch Test Positive Rate
1.8%
Cross-reactivity Group
fragrance-mix-II
Reaction Type
contact-dermatitis
IFRA Restricted — max 0.6% in finished products

Source: ESSCA/IVDK

Dermal Penetration Profile

Skin absorption and penetration characteristics of Citrol, relevant to systemic exposure and MoS calculations.

Absorption %
18-30%
Penetration Level
epidermis
Penetration Depth
epidermis/dermis
Molecular Weight
152.2 Da
Log P
3.45
Systemic Absorption
yes
Topical Bioavailability
12-25%
Safety Margin Factor
high
Vehicle Dependent
Yes — absorption varies by formulation

Source: SCCS/1459/11, IFRA

IFRA Concentration Limits (12 Product Categories)

International Fragrance Association standards per product category. Restriction: Restriction. Effective: 2021-02-10.

Category Max % Category Max %
1 (Lip products) 0.3% 7a (Deodorant – not spray) 0.59%
2 (Body spray) 0.089% 7b (Deodorant spray) 0.59%
3 (Body cream) 0.3% 8 (Face cream) 0.099%
4 (Fine fragrance) 1.2% 9 (Soap) 1.4%
5a (Body lotion) 0.3% 10a (Household – non-spray) 1.4%
5b (Face cream leave-on) 0.29% 10b (Household – spray) No Restriction%
5c (Hand cream) 0.3% 11a (Intimate – leave-on) 0.099%
5d (Baby cream) 0.099% 11b (Intimate – rinse) 0.099%
6 (Mouthwash) 0.29% 12 (Not for consumer exposure) No Restriction%

Additional Ingredient Properties

8 property records from structured ingredient metadata.

acne
{"cas_number": "5392-40-5", "anti_acne_mechanism": "antibacterial", "comedogenicity_rating_0_to_5": "2", "acne_type_efficacy": "inflammatory", "p_acnes_mic_ug_per_ml": "100-500", "sebum_reduction_pct_clinical": "5-10", "prescription_required_usa": "No", "otc_drug_monograph_category": "No", "max_otc_concentration_pct": "Max 1%", "japan_quasi_drug_anti_acne": "No", "korea_functional_cosmetic_acne": …
allergen_detail
{"eu_allergen_listed": "yes", "allergen_class": "fragrance", "cross_reactivity_group": "fragrance-mix-II", "patch_test_frequency_pct": "1.8", "sensitization_rate": "moderate", "common_reaction_type": "contact-dermatitis", "ifra_restricted": "yes", "ifra_max_level_pct": "0.6", "source": "ESSCA/IVDK"}
concentration
{"min_concentration_pct": "0.01", "max_concentration_pct": "0.5", "typical_concentration_pct": "0.2", "product_type": "Toner", "function_at_concentration": "Fragrance component", "source": "EU Cosmetics Regulation (labeling required)"}
dermal_absorption
{"molecular_weight_da": "152.2", "log_p_value": "3.45", "skin_penetration_level": "epidermis", "penetration_depth": "epidermis/dermis", "absorption_pct": "18-30", "systemic_absorption": "yes", "penetration_enhancer": "yes", "occlusion_effect": "no", "vehicle_dependent": "yes", "skin_barrier_effect": "neutral", "bioavailability_topical_pct": "12-25", "safety_margin_factor": "high", "source": "SCCS/…
ecotoxicity
{"biodegradable": "yes", "biodegradation_days": "14-28", "bioaccumulative": "no", "aquatic_toxicity_level": "moderate", "coral_reef_safe": "yes", "marine_toxicity": "moderate aquatic toxicity", "freshwater_toxicity": "moderate fish toxicity", "endocrine_disruptor": "no", "persistent_organic_pollutant": "no", "microplastic": "no", "nano_particle": "no", "hawaii_banned": "no", "eu_restricted_environ…
fragrance
{"cas_number": "5392-40-5", "ingredient_class": "natural_isolate", "chemical_class": "aldehyde", "odor_family": "citrus", "odor_description": "Strong lemon, citrus fresh", "odor_strength": "very_strong", "odor_tenacity_hours": "3.0", "top_note": "yes", "heart_note": "yes", "base_note": "no", "blending_factor_1_10": "9.0", "threshold_of_detection_ppb": "0.5", "molecular_weight_Da": "152.23", "boili…
pediatric_safety
{"safe_for_newborn_0_6m": "caution", "safe_for_infant_6_12m": "caution", "safe_for_toddler_1_3y": "caution", "safe_for_child_3_12y": "yes", "safe_for_teen_12_18y": "yes", "pediatric_max_concentration_pct": "1.0", "adult_max_concentration_pct": "unlimited", "pediatric_dermal_absorption_factor": "higher", "immature_skin_barrier_risk": "moderate", "oral_ingestion_risk": "low", "eye_irritation_risk": …
regulatory
{"eu_status": "restricted", "us_status": "allowed", "eu_max_concentration": "0.001", "restricted_in": "rinse-off: >0.01%, leave-on: >0.001%", "regulation_reference": "Annex III/205"}

Expert Verdict

Expert safety assessment and concern-level summary for Citrol.

Regulatory Flags

potential-allergen fragrance-component

NOAEL Studies Summary

View details ->

Public NOAEL study rows linked to Citrol by CAS number or substance name.

Studies
38
Lowest NOAEL
6
Highest NOAEL
4275

Units vary across source rows: mg/kg bw/day, mg/kg bw

COSMOS_DB EFSA_OpenFoodTox_EFSA_ReferencePoints.xlsx ECHA_REACH_reach_study_results_dossiers_23-05-2023.zip

Frequently Asked Questions

Is Citrol safe in cosmetics?

Citrol has a safety rating of "MODERATE" in our database. EU status: restricted. US status: permitted.

Is Citrol allowed in the EU?

Citrol EU regulatory status: restricted. This is based on EU Regulation 1223/2009 and its amendments.

What does Citrol do in cosmetics?

Citrol functions as: Fragrance ingredient. It is classified as a cosmetic ingredient in our database. CAS number: Citrol is a trade name; typically refers to Citral (CAS 5392-40-5, mixture of geranial + neral).

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