Is L-Ornithine safe in cosmetics?
L-Ornithine has a safety rating of "EXCELLENT" in our database. EU status: permitted. US status: permitted.
Excellent
Cosmetic Ingredient
L-Ornithine
INCI: ORNITHINE
L-Ornithine (CAS 70-26-8) is a cosmetic cosmetic ingredient functioning as Skin conditioning, Antistatic. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety and pharmaceutical data.
View industrial chemical safety profile for CAS 70-26-8 →
Auto-generated CPSR Part A draft with source citations
Function
Skin conditioning, Antistatic
Safety Rating
EXCELLENT
Chemistry & Identifiers
IUPAC Name
(2S)-2,5-diaminopentanoic acid
InChIKey
AHLPHDHHMVZTML-BYPYZUCNSA-N
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
No FDA cosmetic restrictions; endogenous amino acid with established safety in food and supplement use
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for L-Ornithine.
Calculate MoS for your specific formulation with the MoS Calculator.
ECHA REACH Registration
European Chemicals Agency REACH dossier and Substances of Very High Concern listing.
Registration Type
Intermediate
Tonnage Band
Intermediate use only
Substance Type
SUBSTANCE
SVHC Candidate
No
Additional Ingredient Properties
1 property record from structured ingredient metadata.
anti_aging
{"anti_aging_claim": "barrier-repair", "mechanism_of_action": "Building block for proteins, NMF component", "target_skin_layer": "epidermis", "collagen_stimulation": "Mild", "elastin_protection": "Mild", "wrinkle_reduction_pct": "4-8", "clinical_study_duration_weeks": "8", "sample_size": "25", "double_blind": "No", "placebo_controlled": "Yes", "published_journal": "Int J Cosmet Sci", "improvement_…
PubChem Annotations
Safety and regulatory annotations from PubChem (NCBI) aggregated sources.
Safety (1)
Carcinogen Classification
No indication of carcinogenicity to humans (not listed by IARC).
Source: Toxin and Toxin Target Database (T3DB)
Expert Verdict
Expert safety assessment and concern-level summary for L-Ornithine.
Regulatory Flags
amino-acid
skin-conditioning
antistatic
endogenous
Cross-Vertical Safety Context
Same-CAS public records found in pharmaceutical data.
SOURCE
ChEMBL / DrugCentral / FAERS
DB_PHARMA CAS match
Pharmaceutical Data
Same-CAS rows from the pharmaceutical spoke database.
Compound
ORNITHINE
ChEMBL ID
CHEMBL446143
Max Phase
3
Adverse Event Associations
20
Frequently Asked Questions
Is L-Ornithine allowed in the EU?
L-Ornithine EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does L-Ornithine do in cosmetics?
L-Ornithine functions as: Skin conditioning, Antistatic. It is classified as a cosmetic ingredient in our database. CAS number: 70-26-8.
Is L-Ornithine used outside cosmetics?
L-Ornithine also appears in industrial chemical safety and pharmaceutical data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Compliance Tools
Check L-Ornithine compliance across multiple jurisdictions:
Ingredient Decoder
Paste a full ingredient list for instant analysis
82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
Check compliance across multiple jurisdictions
MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
Compare limits across jurisdictions
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